8 question

A 8.3 kg chair is pushed across a frictionless floor with a force of

42 N that is applied at an angle of 22° downward from the horizontal.

What is the magnitude of the acceleration of the chair?

A 0.50 kg cream pie strikes a circus clown in the face at a speed of

5.00 m/s and stops. What is the change in kinetic energy of the pie?

How high above the ground does a 7.00 kg bird possess 7300 J of

gravitational potential energy?

What is the velocity of a 10 kg puppy that has 1.3 kg·m/s of momentum?

A bicycle rider pedals around a circular track at 5.1 m/s. The track’s

radius is 51 m. What is the period of the bicyclist’s motion?

A daredevil bike rider speeds around a circular track. The bike and

rider together have the mass shown. What is the magnitude of the

centripetal force acting on them?

What is the gravitational force between planet M and its moon, m?

Enter your answer in scientific notation using e for ×10. For

instance, use 2.0e4 for 2.0×104

What is the speed of a communications satellite orbiting the Moon at

an altitude of 260.0 km above the Moon’s surface? The mass of the moon is 7.35×1022 kg and the radius is 1.74×106 m.