Question

Q10. A boy standing at the top
of a tower of height 20 m,
drops a stone. Assuming g=10
m/s2, the velocity with which it
hits the ground is
0 10 m/s
O 5 m/s
O 40 m/s
O 20 m/s​

Answer 1

Answer:

ANSWER

When there is a free fall, we can directly use the equation of motion :

v

2

=u

2

+2gh

here u=0

so, v=

2gh

=

2×10×20

=20 m/s

Explanation:

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Answer 2

Answer:

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