Question

A force acts for 10 s on a stationary body of mass 100 kg after which the force ceases to act.

The body moves through a distance of 100 m in the next 5 s. Calculate:
The velocity acquired by the body.
[Ars: 20 m
(b) Acceleration produced by the force.
[Ans: 25
(e) The magnitude of the force.
(An: 200N​

Answer 1

a) Velocity = 20m/s

b) Acceleration = 2m/s²

c) Force = 200N

Step-by-step explanation:

a) Velocity acquired by the body

Formula for Velocity is given as = Distance / Time

In the question, Distance = 100m

Time = 5s

Velocity = 100m/ 5s

= 20m/s

Therefore, Velocity acquired by the body = 20m/s

b) Acceleration produced by the force is calculated as:

Formula for Acceleration = Velocity/ Time

Velocity is calculated as Velocity acquired by the body = 20m/s

Time = 10s

a = 20m/s / 10s

a = 2m/s²

Therefore, Acceleration produced by the force = 2m/s²

c) Force = Mass × Acceleration

From the above question,

Mass = 100kg

Acceleration = 2 m/s²

Force = 100kg × 2m/s²

= 200kgm/s² or 200 N(Newton)

Therefore, Force produced by the body = 200N