Question

Find the force required to change the velocity of a body of mass 10 kg from 5 m/s to 8 m/s in 2 s​

Answer 1

Answer:

15 N

Explanation:

Given:

u = 5 m/s

v = 8 m/s

t = 2 s

a = ?

We know, v = u + at

8 = 5 + a(2)

2a = 3

a = 1.5 m/s^2

F = ma

= 10 × 1.5

= 15 N

Therefore, 15 N force would be needed.