Exam 3 Review

If the net external torque acting on a body is zero, angular momentum is conserved.

• TRUE

• FALSE

When a rigid body rotates about a fixed axis all the points in the body have the same linear velocities but may have different angular velocities.

• TRUE

• FALSE

Momentum is conserved in all of the collision types we have studied, i.e., inelastic, completely inelastic, and elastic.

 

• TRUE

• FALSE

Tags

NGSS.HS-PS2-2

• TRUE

• FALSE

Tags

NGSS.HS-PS2-1

If a car is traveling around a curve the total acceleration vector can point nowhere except toward the center of the radius of curvature.

• TRUE

• FALSE

Tags

NGSS.HS-PS2-1

It is possible for a system consisting of more than one object to have non-zero kinetic energy and zero total momentum.

• TRUE

• FALSE

Tags

NGSS.HS-PS2-2

If the net force acting on a body is zero, it is guaranteed that the net torque on the object are also zero.

• TRUE

• FALSE

A student sits on a stool that is free to rotate without friction. The student holds a rotating wheel with the axis of rotation vertical, spinning counter-clockwise as viewed from the top. If the student rotates the wheel 180 degrees, the student will rotate clockwise as viewed from the top.

• TRUE

• FALSE

When a body is in pure rotational motion about a fixed axis, all points in the body have the same angular velocity.

• TRUE

• FALSE

If a body is in equilibrium, the net force and the net torque acting on it are both zero.

• TRUE

• FALSE