Question

A body of mass 4 Kg moving on a horizontal surface with an initial velocity of 6m/s ,comes to rest after 3 second. If one wants to keep the body moving on the same surface with the velocity of 6m/s the force required. A body of mass 4 Kg moving on a horizontal surface with an initial velocity of 6m/s ,comes to rest after 3 second. If one wants to keep the body moving on the same surface with the velocity of 6m/s the force required
1 point
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Answer 1

Answer:

Given:

m=4kg

u=6m/s

v=0

t=3s

We know,

F=ma

F=m(v-u)/t [since a=v-u/t]

F=4*(0-6)/3

F=4*(-2)

F= -8N