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The moment of  inertia of a disk about its axis is 0.70 kg · m2 . When a 2.0-kg weight is added to its rim, 0.40m from the axis, the total moment of inertia becomes

In a physics experiment, two equal-mass carts roll towards each other on a level, low-friction track. One cart rolls rightward at 2 m/s and the other cart rolls leftward at 1 m/s. After the carts collide, they couple (attach together) and roll together with a speed of _____________. Ignore resistive forces.

A platform diver weighs 500 N. She steps off a diving board that is elevated to a height of 10 meters above the water. The diver will possess ___ Joules of kinetic energy when she hits the water.

Two forces are applied to a doorknob, perpendicular to the door.  The first force is twice as large as the second force.  The ratio of the torque of the first to the torque of the second is

Mass differs from weight in that:

An arrow is drawn back so that 50 Joules of potential energy is stored in the stretched bow and string. When released, the arrow will have a kinetic energy of ____ Joules.

True or False: If object A with electric charge 26 nC attracts object B with electric charge 52 nC, then object B attracts object A with the same force.

The displacement versus time for a certain particle moving along the x axis is shown. The average velocity in the time intervals  0 to 2 s is :

A force on a particle is conservative if:

An object sits on a frictionless surface. A 16-N force is applied to the object, and it accelerates at 2.0 m/s2. What is the mass of the object?