How Suppose you are playing ice hockey in the middle of a totally frictionless f

Question

How Suppose you are playing ice hockey in the middle of a totally frictionless frozen pond. can you move yourself to the edge of the pond? Remember that without friction, you won't be able to push against the ice. Explain what you would do and why it would work. 0 7. 8. A 4.5-kg ham is thrown into a stationary 15-kg shopping cart. At what speed will the cart travel if the ham had an initial speed of 2.2 m/s? If the ham hits the cart with 2N of force, how long did the collision between the two last? 9, A 6-kg bowling ball rolling at 5 m/s strikes a stationary 4-kg bowling ball. If Ball #1 is moving forward at 2 m/s after the collision, what is the speed and direction of Ball #2? what is the impulse of the system? If the collision last for 5 seconds, how much force is exerted? 10. Make two event chains showing what happens when a rolling ball (Ball 1) hits a resting ball (Ball 2). Use the phrases: gains momentum, hits Ball 2, is hit by Ball 1, loses momentum, rests, rolls, slows down, and starts rolling BALL 1 BALL 2

Explanation / Answer

I am answering first question (question 7)

Yes it is correct that without friction we can not walk even a single step ahead or backward. But, here we have a hockey and the ball in our hands.

On a frictionless surface, if we push hockey ball ahead, then with the same momentum we will be pushed backward. It is due to the conservation of linear momentum. Taking hockey + person as the system, no external force is acting, therefore, by Newton's second law, momentum of the system remains conserved.

The momentum we give to the hockey, the same momentum we will also get but in opposite direction. In this way, we can reach the edge.

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