Question

If a ball is thrown vertically upwards with

speed u, the distance covered during the last

t second of its ascent is ​

Answer 1

Explanation:

Let time of flight be T then T=

g

u

Let h be the distance covered during last 't' second of its ascent

Velocity at point B=V

B

=u−g(T−t)

=u−g(

g

u

−t)=gt

⇒h=V

B

t−

2

1

gt

2

⇒h=gt

2

−

2

1

gt

2

=

2

1

gt

2

Hope it helps

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