Grade 11Mechanics

A ball is thrown vertically upward with a velocity u from the top of a tower.if it strikes the ground with velocity 3u, the time taken by the ball to reach the ground is

Soumyadeep

11 Years agoGrade 11

4 Answers

Nicho priyatham

11 Years ago

4u/g is the ans correct

Nicho priyatham

11 Years ago

well it is so simple a=(V-U)/t

here a=-g v=-3u u=u

find t

Mahin Tazbiya

8 Years ago

initial velocity = u =-u

final velocity = v = 3u

acceleration due to gravity = g

v = u + gt

3u = -u + gt

3u+u/g = t

4u/g = t

Anu

7 Years ago

Well

Since u is going against gravity, u = -u

And final velocity is 3u so, v = 3u

Time can be calculated

V = u + gt

3u = -u + gt

So, 4u/g = t

Hope this will help.

4u = gt

So, t = 4u

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A ball is thrown vertically upward with a velocity u from the top of a tower.if it strikes the ground with velocity 3u, the time taken by the ball to reach the ground is

Soumyadeep

4 Answers

Nicho priyatham

Nicho priyatham

Mahin Tazbiya

Anu

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