A 3.00 kg stone is sliding to the right on a frictionless horizontal surface at

Question

A 3.00 kg stone is sliding to the right on a frictionless horizontal surface at 4.50 m/s when it is suddenly struck by an object that exerts a large horizontal force on it for a short period of time. The graph in the figure shows the magnitude of this force as a function of time.

http://session.masteringphysics.com/problemAsset/1037806/6/YF-08-34.jpg



A- What impulse does this force exert on the stone?


B- Just after the force stops acting, find the magnitude of the stone's velocity if the force acts to the right.


C- Just after the force stops acting, find the direction of the stone's velocity if the force acts to the right.
a- to the right
b- to the left


D- Just after the force stops acting, find the magnitude of the stone's velocity if the force acts to the left.


E- Just after the force stops acting, find the direction of the stone's velocity if the force acts to the left.
a- to the right
b- to the left

Explanation / Answer

2.5 Ns 2.5 = 3(v-4.5) 5.33 m/sec to the right when force acts to the left !!! 2.5 = 3(4.5 - v) v = 3.66 m/sec to the right

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