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Two identical charges, of 4.2 x 10-5 C, are 2.0 m apart. hwat is the electrostatic force between  them? K = 8.9 x109 N m2/C2

If you exert a force F on an object, the force which the object exerts on you will

  A A 0.140-kg baseball traveling 35.0 m/s strikes the catcher’s mitt, which, in bringing the ball to rest, recoils backward 11.0 cm. What was the average force applied by the ball on the glove?  

A wheel accelerates with a constant angular acceleration of 4.5 rad/s2.  If the initial angular velocity is 1.0 rad/s, what is the angle the wheel rotates through in 2.0 s?

A constant force of 8.0 N is exerted for 4.0 s on a 16-kg object initially at rest. The speed of this object will be:

What is the gravitational force on a 70-kg person standing on the Earth, due to the Moon?  The mass of the Moon is 7.36 × 1022 kg and the distance to the Moon is 3.82 × 108 m. G = 6.67 x 10-11 N m2/ Kg2   

A wheel accelerates with a constant angular acceleration of 4.5 rad/s2.  If the initial angular velocity is 1.0 rad/s, what is the angular velocity at t = 2.0 s?

Starting from rest, a 4.0-kg body reaches a speed of 8.0 m/s in 2.0 s. What is the net force acting on the body?

A boy and a girl are riding on a merry-go-round which is turning at a constant rate.  The boy is near the outer edge, and the girl is closer to the center.  Who has the greater angular displacement?

A block is released from rest at point P and slides along the frictionless track shown. At point P, its mechanical energy  is: