AP PHYSICS 1 FIRST MIDTERM TEST

Object 1 and object 2 travel across a horizontal surface, and their horizontal velocity as a function of time is shown in the graph. Which of the following statements is correct about the two-object system?

• A. The magnitude of acceleration for object 2 is greater than the magnitude of the acceleration of object 1.

• B. After 2s, object 1 travels a greater distance than object 2 travels.

• 3. C. Object 1 and object 2 are at the same horizontal position at 2s.

• D. After 4s, the speed of object 1 is greater than the speed of object 2.

Tags

NGSS.HS-PS2-1

Two blocks are connected by a rope, as shown above. The masses of the blocks are 5 kg for the upper block and 10 kg for the lower block. An upward applied force of magnitude F acts on the upper block.

The system is moving and accelerating upward. A pair of scissors cuts the rope. Which of the following describes the motion of the 10 kg block immediately after the rope has been cut?

• A. The block continues to move upward and to accelerate upward.

• B. The block begins to move downward but continues to accelerate upward.

• C. The block continues to move upward but begins to accelerate downward.

• D. The block begins to move downward and to accelerate downward.

Tags

NGSS.HS-PS2-1

A student uses both hands to push a door such that it moves and swings open after the force has been applied. The student then makes the following claim: “I can use both of my hands to apply a constant force on my body so that my body falls backward.” Which of the following statements correctly justifies the student's claim?

• The claim is correct because the situation is the same as if another person’s hands applied a force on the student.

• The claim is correct because the student’s hands will exert a net force on the student’s body.

• The claim is not correct because the student’s hands cannot exert a force on the student’s body.

• The claim is not correct because the student’s body will exert a force of equal magnitude back on the student’s hands as a result of Newton’s third law of motion.

Tags

NGSS.HS-PS2-1

On the surface of a spherical asteroid, a small object of mass 1×10⁻⁵kg and has a weight of 1×10⁻¹⁰N is held above the surface. Which of the following graphs correctly shows the rock’s motion if it is dropped from rest near the asteroid’s surface? Select two answers.

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Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The graph above represents position x versus time t for an object being acted on by a constant force. The

average speed during the interval between 1 s and 2 s is most nearly

• 2 m/s

• 4 m/s

• 5 m/s

• 6 m/s

Three forces act on an object. If the object is moving to the right in translational equilibrium,

which of the following must be true?

• A. The vector sum of the three forces must equal zero.

• B. All three forces must be parallel.

• C. The magnitudes of the three forces must be equal.

• The object must be speeding up.

Tags

NGSS.HS-PS2-1

If F1 is the magnitude of the force exerted by the Earth on a satellite

in orbit about the Earth and F2 is the magnitude of the force

exerted by the satellite on the Earth, then which of the following is true?

• A. F1 is much greater than F2.

• B. F1 is slightly greater than F2.

• C. F1 is equal to F2.

• D. F2 is slightly greater than F1

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

An object has a weight 2W when it is on the surface of a planet of radius R. What will be the gravitational force

on the object after it has been moved to a distance of 2R from the center of the planet?

• A. 1/8 W

• B. 1/2 W

• C. 4 W

• D. 8 W

Tags

NGSS.HS-PS2-4

A target T lies flat on the ground 3 m from the side of a building that is 10 m tall, as shown above. A student

rolls a ball off the horizontal roof of the building in the direction of the target. Air resistance is negligible. The

horizontal speed with which the ball must leave the roof if it is to strike the target is most nearly.

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Tags

NGSS.HS-PS2-1

A satellite moves in a circular orbit at a constant speed V₀ around Earth at a distance R from its center. The force exerted on the satellite is F₀. An identical satellite orbits Earth at a distance of 3R from the center of the Earth. How does the tangential speed, V_T, of the satellite at distance 3R compare to the speed V₀ of the satellite at R?

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Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4