Question

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physics class 9 ls motion

A stone is released from the top of a tower of height 19.6m.Calculate its final velocity
The mass of a hody on earth is 10 kg What will be its weight on earth?

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Answer 1

Answer:

hi

Explanation:

Given,

Initial velocity, u = 0

Final velocity, v =?

Acceleration due to gravity, g = 9.8 m/s2

Height, h = 19.6 m

We know that,

v2 = u2 + 2gh

= (0)2 + 2 × 9.8 × 19.6

= 19.6 × 19.6

= (19.6)2

= 19.6 m/s

Therefore, its final velocity