Question

a force acts for 0.2 sec on an object having a mass 1.4 initially at rest .the force stops to act but the object moves through 4m in the next 2sec find the magnitude of the force
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Answer 1

Answer:

please ask your question a bit more clear

Answer 2

Time=0.2sec.

Mass=1.4kg.

after force stops object moves through 4m in next 2sec.

Distance=4m.

Time=2sec

velocity=distance/time.

velocity=4/2.

velocity=2m/s.

initial velocity (u)=0

final velocity (v)=2

acceleration=v-u/t.

acceleration=2-0/0.2.=10m/s.

force= mass* acceleration

1.4*10=14N.

Magnitude of the force=14N.

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