Question

Velocity of the body which was intially at rest is 10 m/s after 4 sec if tje mass of the body is 1 kg find the force applied ?

Answer 1

Answer:

: 4000 J How To: 1. Constant Acceleration: a = F / m. This is Newton's second law formula solved for acceleration. ... Final velocity: Vf = Vi + a•t (40 m/s) 3. ... A body of 5 kg mass, initially at rest, is subjected to a force of 20 N.

Answer 2

Answer:

2.5 N

Explanation:

Acceleration of body

a = (v - u)/t

= (10 m/s - 0 m/s)/(4 s)

= 2.5 m/s²

Force = ma

= 1 kg × 2.5 m/s²

= 2.5 N