A block of mass m=8.50 kg is launched with an initial speed of 10.0 m/s at the b

Question

A block of mass m=8.50 kg is launched with an initial speed of 10.0 m/s at the bottom of an inclined plane of angle a=15.0 degrees. The ramp has a coefficient of kinetic friction of 0.400. (a) how much TIME does it take for the block to come to rest (before possibly sliding back down)? (B) what maximum VERTICAL HEIGHT does the block reach?
A block of mass m=8.50 kg is launched with an initial speed of 10.0 m/s at the bottom of an inclined plane of angle a=15.0 degrees. The ramp has a coefficient of kinetic friction of 0.400. (a) how much TIME does it take for the block to come to rest (before possibly sliding back down)? (B) what maximum VERTICAL HEIGHT does the block reach? ****Do not use conservation of energy to solve this problem

Explanation / Answer

deccn of block =gsinthta+ugcosthta=6.33

t=v/deccn=10/6.33=1.58s

d=v^2/2deecn=100/(2*6.33)=7.9m

h=dsin15=2.04m

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