- #1
Alameen Damer
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Homework Statement
A 9.1 g ball is hit into a 98 g block of clay at rest on a level surface. After impact, the block slides 8m before coming to rest. If the coefficient of friction is 0.60, determine the speed of the ball before impact
Homework Equations
Ek+1/2 mv^2
Ff=uFn
The Attempt at a Solution
First of all, I calculate friction force.
Fn=(0.098)(9.8)
=0.96
Ff=(Fn)(Uk)
=5.9 N
I find acceleration of the block:
-5.9 N = 0.098a
-60 m/s^2=a
At this point I am stuck i am unsure of what to find next given that i know no velocities, except the initial velocity for the block. This problem i should solve using conservation of energy and momentum.