Author Question: Two objects collide on a frictionless surface. If one had been at rest before the collision, is it ... (Read 69 times)

neverstopbelieb · **on:** Jul 28, 2018

Two objects collide on a frictionless surface. If one had been at rest before the collision, is it possible for:

(i) one object to be at rest after the collision?
(ii) both objects to be at rest after the collision?

1.(i) only
2.(ii) only
3.both (i) and (ii)
4.neither (i) nor (ii)

Question 2

You are at the leading end of a canoe and your friend is at the trailing end as the canoe is drifting along at a speed of v. You toss a backpack to your friend and he catches it. What is the canoe's speed after your friend catches the backpack compared to before you threw it? Ignore any friction effects between the canoe and the water.
1.It is greater than v.
2.It is less than v.
3.It now has the same speed it had before the backpack was thrown.
4.We cannot tell from the information given.