Question

a force of 20 N acts for 5sec on a mass of 4kg.What isthe change in velocityof the mass​

Answer 1

Explanation:

as 20n acts on 5sec we get 4 and we need to multiply the weight of and we get 16ans

Answer 2

Answer:

Velocity = 20 m/s.

Explanation:

Given:

• Force = 20 N
• Time = 5 sec
• Mass = 4 kg

To Find:

• Velocity.

Now, firstly we have to find acceleration,

⇒ Acceleration = Force/Mass

⇒ Acceleration = 20/4

⇒ Acceleration = 5 m/s²

Now, from 1st equation of motion we will calculate velocity,

⇒ v = u + at

⇒ v = 0 + 4 × 5

⇒ v = 20 m/s.

Hence, Velocity = 20 m/s.