Question

a ball of mass 20 kg stats from rest and gets final velocity of 20 m/ s in time 5 sec find force on ball​

Answer 1

Answer:

F = ma

20×20=400N

hope it's helpful to you

Answer 2

Answer:

Force of the ball is 80N

Explanation:

Given,

A ball of mass 20kg starts from rest attains a velocity of 20m/s in 5sec.

Find the force of the ball.

We know,

Force of the ball is given by,

→ F = m*a

Where,

• m is the mass of the body.
• a denotes the acceleration.

Finding ‘a’ :-

→ a = (v - u)/t

Where,

• v(final velocity) = 20m/s
• u(initial velocity) = 0m/s [since it starts from rest]
• t(time taken) = 5 sec

→ a = (20 - 0)/5

→ a = 20/5

→ a = 4m/s²

Now,

Force of the ball

→ m*a

→ 20*4

→ 80N

∴ Force of the ball is 80N

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