Question

How long should a force of 100 N act on a body of 20kg so that it acquires a velocity of 100 m/s?
*Please dont write wrong answer to get points.*

Answer 1

assuming initial velocity be 0 m/s
F =ma
F=mv/t

So,
t=mv/F
=20×100/100
=20s

Hope you are helped
:)

Answer 2

F =100 N

Mass, m = 20kg

Velocity, v = 100m/s

now, we know that

F = m a

m for mass

a for acceleration

we also know that,

a = v/t

v for velocity

t for time ( mostly expressed in sec)

so, F= mv/t

so t= mv /F

t = 20× 100/100

t= 20 sec

hope that was correct and helpful:)