1. A hockey puck at the end of a string is being swung in a horizontal circle.

a) The hockey puck is accelerating because:

b) What is the direction of the acceleration of the hockey puck? (Draw Diagram)

c) What force is producing the centripetal acceleration of the hockey puck?

d) What is the direction of the net force on the hockey puck? (Draw Diagram)

3. A 2700 kg car drives at 45 m/s over a circular hill that has a radius of 520 m. At the point shown in Figure P6.57, what is the normal force on the car?

Figure P6.57 45\f\fThe change in momentum of the superball is greater than the change in momentum of the clay. The change in momentum of the superball is less than the change in momentum of the clay. The change in momentum of the superball is equal to the change in momentum of the clay. The impulse delivered to superball is greater than the impulse delivered to the clay. The impulse delivered to superball is equal to the impulse delivered to the clay. The impulse delivered to superball is less than the impulse delivered to the clay. The force exerted by the scale on the superball is greater than the force exerted by the scale on the clay. The force exerted by the scale on the superball is less than the force exerted by the scale on the clay. The force exerted by the scale on the superball is equal to the force exerted by the scale on the clay