Question

a body is projected vertically upward with a velocity of 10 m/s, then the velocity with which it reaches the ground(neglect air resistance) *​

Answer 1

Answer:

Given,

Velocity=10m/s,

Height =h

Time =t

Since v=u−gt where u=0

⇒10=10t⇒t=1s

Since u=0

At t=

2

1

s u

2

=2×gH

⇒

2×10

100

=H⇒H=5m

Now, h

′

=ut+

2

1

gt

2

=10×

2

1

−

2

1

×10×

4

1

=

4

15

=

4

3H

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