Question

A ball is gently dropped from a height of 20 m if its velocity increases uniformly at a rate of 10 mper sec with what velocity will strike the ground.

Answer 1

I think that velocity is 2

Answer 2

Hii Friend

Good Afternoon

Let's solve this problem

Q.type=Easy

Solution:

Given

initial velocity(u)=0 (At height ball was at rest)

Displacement(s)=20m

Acceleration(a)=10m/s2

To find final velocity=v

Use 3rd equation of motion

${v}^{2} - {u}^{2} = 2as \\ { {v}^{2} - 0}^{2} = 2 \times 10 \times 20 \\ v = 20$

Answer=Final velocity is 20m/s


Answered by Mr.BEST

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