GenPhy1Q1 Wheel

このルーレットの内容（49 項目）

A meter ruler is used to measure the length of the school desk. Which reading of length of the desk is shown to the nearest millimeter? A. 0.7 m B. 0.76 m C. 0.761 m D. 0.7614 m
A height of 5 feet 8 inches is equivalent to_____________ A. 173 cm B. 177 cm C. 207 cm D. 223 cm
If you are playing football and you always hit the right goal post instead of scoring, you are exhibiting __________________. A. Accuracy B. Precision C. Both accuracy and precision D. Neither accuracy nr precision
Quantities are classified as scalar and vector. Scalar quantities are quantities with magnitude while vector quantities with both magnitude and direction. Which of the following quantities is a vector quantity? A. Temperature B. Speed C. Distance D. Work
The following forces act on an object. 10N to the north, 20N to the southeast, and 5N to the west. The magnitude of their resultant is_______ A. 5 Newton B. 10 Newton C. 15 Newton D. 23 Newton
The magnitude of the resultant of two forces is a minimum when the angle between them is _______. A. 0 degrees B. 45 degrees C. 90 degrees D. 180 degrees
On a distance-time graph, a horizontal straight line corresponds to a motion at _______. A. Zero speed B. Constant speed C. Increasing speed D. Decreasing speed
On a velocity-time graph, the motion of a car traveling along a straight road with the uniform acceleration of 2 m/s would appear as A. Horizontal straight line B. Straight line sloping upward to the right C. Straight line sloping down to the right D. curved line whose downward slope to the right increases with time
A rock is dropped from the 4th floor of the school’s senior high school building and strikes the ground with an impact velocity of 35 m/s. How high was did the rock fell? A. 35.50 m B. 61.25 m C. 123.25 m D. 140.5 m
Every day, Allison, a Grade 12 student travels from her home to MSHS. Her home is about 15 km away from the school. If she rides a car that starts from rest and travels at a uniform acceleration of 0.5m/s2, how long will it take her to get to school? (Neglect all traffic conditions) A. 4.08 minutes B. 6 minutes C. 40.8 minutes D. 60 minutes
An object is undergoing free fall motion. As it falls, the object's ___________________ A. speed increases B. acceleration increases C. both speed and acceleration increases D. neither speed nor acceleration increases
A cannonball is launched into the air at an angle of 45 degrees with the horizontal. At the top of the ball's path, its velocity is __________________ A. Entirely vertical B. Entirely horizontal C. Both vertical and horizontal D. Not enough information was given
A cannonball is launched into the air at an angle of 45 degrees with the horizontal. At the top of the ball's path, its acceleration is __________________. (Neglect the effects of the air resistance) A. Entirely vertical B. Entirely horizontal C. Both vertical and horizontal D. Not enough information was given
At what point in its path is the horizontal component of the velocity (Vx) of a projectile the smallest? A. The instant it is thrown B. Halfway the top C. At the top D. It is the same throughout the path
The school’s soccer ball team headed by Sir Russell was having their regular practice in the school’s covered court. One of the players kicked the ball at rest, with an initial velocity of 15m/s at a 45 degrees angle. What is the ball’s time of flight assuming air resistance is negligible? A. 1 s B. 1.25 s C. 1.41 s D. 21.2 s
A projectile is shot off a cliff 70.0 m high at an angle of 35o above the horizontal. It has an initial velocity of 26.0 m/s. What is the projectile’s speed just before it hits the ground? A. 0.279 C. 0.638 B. 0.751 D. 0.413
Which of the following statements about an object in equilibrium is false? A. The net force acting on the object must be zero B. The body may be moving with constant velocity C. The body must be at rest D. The body can be moving at a steady speed
A crate of mass 150 kg is at rest on a horizontal floor. The coefficient of friction between the crate and the floor is 0.4 and the coefficient of kinetic friction is 0.3. A force F of magnitude 345 N is then applied to the crate, parallel to the floor. Which of the following is true? A. The crate will accelerate across the floor at 0.5 m/s2 B. The static friction force, which is the reaction force to Fas guaranteed by Newton’s 3rd Law, will also have a magnitude of 344 N C. The crate will slide across the floor at a constant speed of 0.5m/s D. The crate will not move
To say the weight of an apple is 2 Newton is to say that a downward gravitational force of 2 Newton is exerted on the apple. That force is exerted by __________ A. the earth B. her hand C. the apple D. the girl
A mass of 1 kilogram is tied to a string and swung in a horizontal circle of radius 1 meter; if the radius of the circle is then increased to 2 meters, the rotational inertia of this new system will be ____ as before. A. the same B. twice as much C. four times as much D. one fourth as much
A force F of strength 20 N acts on an object of mass 3 kg as it moves a distance of 4 m. If F is perpendicular to the 4 m displacement, the work it does is equal to: A. 0 Joules B. 60 Joules C. 80 Joules D. 600 Joules
A particle is released from rest at the point x = a and moves along the x axis subject to the potential energy function U(x) shown. The particle: A. moves to a point to the left of x = e, stops, and remains at rest B. moves to a point to x = e, then moves to the left C. moves to infinity at varying speed D. moves to x = b, where it remains at rest
Two blocks are connected by a string and pulley as shown. Assuming that the string and pulley are mass less, the magnitude of the acceleration of each block is: A. 0.049 m/s2 B. 0.0098 ms2 C. 0.54 m/s2 D. 0.98 m/s2
A book is at rest on top of a table. Which of the following is correct? A. There is no force acting on the book. B. The book is in equilibrium. C. The inertia of the book is equal to the inertia of the table. D. There is no force acting on the table.
A student averaged 55 miles per hour on a trip. What was the student’s speed in meter per second? Express your final answer in scientific notation form. A. 24.58 m/s B. 2.45 x 101 m/s C. 245 x 101 m/s D. 2458 m/s
Which of the following has the largest moment of inertia? A. A solid cylinder of mass M, and radius R, about a cylinder axis B. A hollow cylinder of mass M, and radius R, about a cylinder axis C. A solid sphere of mass, M, and a radius R, about an axis through its center D. A hallow sphere of mass, M, and a radius R, about an axis through the center.
A wheel of radius 2.0 m is spinning with the angular velocity of 4.0 rad/s. What is the centripetal acceleration of a point in a wheel’s rim? A. 2.0 m/s2 B. 4.0 m/s2 C. 8.0 m/s2 D. 32 m/s2
A fly and a mosquito are sitting on a phonograph record which is turning at a constant rate. The fly is near the outer edge of the record and the mosquito is near the center. How do their angular velocities compare? A. The fly has the greater angular velocity. B. The mosquito has the greater angular velocity C. Both the fly and the mosquito have the same nonzero angular velocity D. The angular velocity for both is zero
A spinning ice skater stretches out her arms. Her moment of inertia________ and her angular speed_________ A. Increases, decreases B. Increases, increases C. Decreases, decreases D. Decreases, Increases
The earth is in an elliptical orbit about the sun. As it moves closer to the sun its linear speed increases. What happens to its angular momentum and its angular kinetic energy? A. Its angular momentum increases while its angular kinetic energy decreases. B. Its angular momentum remains constant, while its angular kinetic energy increases. C. Its angular momentum decreases as does angular kinetic energy. D. Its angular momentum and its angular kinetic energy remain constant.
The torque depends upon a body’s: A. Mass B. Force Only C. Momentum Arm Only D. Force and Momentum Arm Only
Along which a force act is called A. Line of action of Force B. Line of acting Torque C. Axis of rotation D. Moment arm
If 150N of force is applied on a spanner of 10 cm to open a nut, then the length of spanner when the force applied on it is 60 N is _________. A. 0.25 m B. 0.40 m C. 0.50 m D. 0.80 m
The axis about which moment of area is taken is known as ____________ A. Axis of area B. Axis of rotation C. Axis of reference D. Axis of momentum
The point where the total volume of the body is assumed to be concentrated is ____________ A. Center of Area B. Center of Mass C. Center of Volume D. Center of Density
A boy tightens the nut of a car using a 16 cm long spanner by applying a force of 180 N. The torque will be_________ A. 11.25 N-m B. 20.0 N-m C. 28.8 N-m D. 2880 N-m
Two objects with equal masses of 1 kg each are separated by a distance of 1 m. The gravitational force between the objects is ______________ A. Equal to G B. Slightly less than G C. Slightly greater than G D. Half as much as G
An apple hangs on a tree on the Earth. Which of the following statements is correct? A. The force on the apple is greater than the force on the Earth because the Earth is more massive. B. The force on the Earth is greater than the force on the apple because the Earth is more massive. C. The force on the apple is less than the force on the Earth because the tree is supporting the apple. D. The forces on the apple and Earth are equal.
Two objects are attracted to each other by a gravitational force F. If one mass is doubled and the other is tripled without changing the distance, what is the new gravitational force between the objects in terms of F? A. 1/9 F B. 4 F C. 6 F D. 9 F
An object with a mass of 48 kg measured on Earth is taken to the Moon. What is the mass of the object on the Moon’s surface if the acceleration due to gravity on Moon is one-sixth of that on Earth? A. 8 kg B. 48 kg C. 288 kg D. 488 kg
An object with a mass of 48 kg measured on Earth is taken to the Moon. What is the weight of the object on the Moon’s surface if the acceleration due to gravity on Moon is one-sixth of that on Earth? A. 8 N B. 48 N C. 80 N D. 288 N
A hypothetical planet has a mass of four times that of the Earth and radius of twice that of the Earth. What is the acceleration due to gravity on the planet in terms of the acceleration on the Earth? A. g B. 2g C. g/2 D. g/8
A rocket moves away from the surface of Earth. As the distance r from the center of the planet increases, what happens to the force of gravity on the rocket? A. The force doesn’t change B. The force increases directly proportional to r C. The force increases directly proportional to r^2 D. The force decreases inversely proportional to 1/r^2
When riding a bus on a bumpy road, or a ship in a choppy sea, or in an airplane in turbulent air, which part of the vehicle will you sit to experience the most comfortable ride? A. Near the driver’s/pilot’s seat B. Near the entrance/exit door C. Near the rear part of the vehicle D. Near the center of the vehicle
If the distance between two-point particles is doubled, then the gravitational force between them___ A. Decreases by factor of 4 B. Decreases by a factor of 2 C. Increases by a factor of 2 D. Increases by a factor of 4
Pluto has 1/500 the mass and 1/15 the radius of the Earth. What is the value of g on the surface of Pluto? A. 0.3 m/s2 B. 1.6 m/s2 C. 2.4 m/s2 D. 4.5 m/s2
The mean distance from Saturn to the Sun is 9 times greater than the mean distance from Earth to the Sun. How long is a Saturn year? A. 18 Earth years B. 27 Earth years C. 81 Earth years D. 243 Earth years
A father and his young son get on a teeter-totter. The son sits 2 m from the center, but the father has to sit closer to balance. Where does the father have to sit to balance the teeter-totter if he weighs 4 times as much as his son? A. 0.8 on same side B. 1.2 m on opposite side C. 0.5 on same side D. 0.5 m on opposite side.
Two masses are hanging from the ends of a 1 m bar. Where is the balance point (center of mass) of the system? m1 is 1 kg, m2 is 3 kg. Ignore the mass of the bar between the two masses. A. 0.25 m from the 3 kg mass B. 0.80m from the 1 kg mass C. 0.45m from the 1 kg mass D. 0.73m from the 3 kg mass