APP1 Concepts S2

A block slides down a frictionless inclined plane. As the block slides, what happens to its gravitational potential energy and kinetic energy?

• Gravitational potential energy increases, and kinetic energy decreases.

• Gravitational potential energy decreases, and kinetic energy increases.

• Both gravitational potential energy and kinetic energy increase.

• Both gravitational potential energy and kinetic energy remain constant.

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

A spring is compressed by a distance x from its equilibrium position. If the compression is doubled to 2x, how does the potential energy stored in the spring change?

• It doubles.

• It quadruples.

• It remains the same.

• It is halved.

A car moves at a constant velocity. Which of the following statements is true about the net work done on the car?

• The net work done is positive.

• The net work done is negative.

• The net work done is zero.

• The net work done depends on the distance traveled.

Tags

NGSS.HS-PS2-1

Two objects have the same kinetic energy. If object A has twice the mass of object B, how does the speed of object B compare to the speed of object A?

• The speed of B is half the speed of A.

• The speed of B is the same as the speed of A.

• The speed of B is 2 times the speed of A.

• The speed of B is 1.4 times the speed of A.

Tags

CCSS.8.EE.C.7B

A force is applied to an object, causing it to move. The work done by the force depends on which of the following?

• Only the magnitude of the force.

• Only the displacement of the object.

• Both the magnitude of the force and the displacement, and the angle between them.

• Neither the magnitude of the force nor the displacement.

Tags

NGSS.HS-PS3-1

If a net torque is applied to an object that is initially at rest, what will happen to its angular velocity?

• It will remain zero.

• It will increase.

• It will decrease.

• It will become constant and non-zero.

Tags

NGSS.HS-PS2-1

A figure skater spins with her arms outstretched. When she pulls her arms in close to her body, what happens to her angular momentum and angular velocity?

• Angular momentum decreases, and angular velocity decreases.

• Angular momentum remains constant, and angular velocity increases.

• Angular momentum increases, and angular velocity remains constant.

• Angular momentum remains constant, and angular velocity decreases.

Tags

NGSS.HS-PS2-2

For an object to be in rotational equilibrium, what condition must be met?

• The net force acting on the object must be zero.

• The net torque acting on the object must be zero.

• The angular velocity of the object must be constant.

• The moment of inertia of the object must be constant.

Two spheres have the same mass, but sphere X has a larger radius than sphere Y. If both spheres are rolling without slipping at the same linear speed, which sphere has a larger angular speed?

• Sphere X

• Sphere Y

• They have the same angular speed.

• The answer depends on their moments of inertia.

Two cylinders with the same mass and radius are released from the top of an inclined plane. Cylinder A is solid, and cylinder B is a hollow hoop. Which cylinder will reach the bottom first?

• Cylinder A

• Cylinder B

• They will reach at the same time.

• The answer depends on the incline angle.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-2