Question

A body of mass 10 kg is moving with a velocity of 15 m/s . it is accelerated by a force of 30N. what will be its velocity after 1 sec

Answer 1

Answer:

18m/s

Explanation:

Force=30N,mass=10kg

F=ma

30=10×a

a=30÷10=3

a=3m/s, t=1sec,intial velocity (u) =15m/s

v=u+at

v=15+3(1)

v=15+3=18

therefore velocity after 1 second is 18m/s.

Answer 2

Answer :

Mass of body = 10kg

Initial velocity = 15m/s

Applied force = 30N

Time interval = 1s

We have to find final velocity of body after the given interval of time$.$

◈ Newton's Second law of motion :-

As per this law, force is defined as the rate of change of linear momentum.

Momentum is defined as the product of mass and velocity.

• F = m (v - u) / t

⇒ F = m (v - u) / t

⇒ 30 = 10 (v - 15) / 1

⇒ 3 = v - 15

⇒ v = 18 m/s

☃ God_Bless :)