Question

A force of 200 dyne acts on a body of mass 10 g for 5 s. what will be the final velocity of the body if it starts from rest?​

Answer 1

Explanation:

data

initial velocity = o m/s

mass = 10 g = 10 × 10^-3 kg

force = 200 dyne = 200× 10^-4 kg

time = 5 second

find final velocity = ?

solution

as

F = ma

a = F/m

a = 200 × 10^-4 /10 × 10^-3

a = 2.0 m/s

now

final velocity = initial velocity + at

vf. = vi + at

= 0 + 2 × 5

vf = 10 m/s