Question

show that height h obtained by a ball thrown in upward direction is directly proportional to square of the time taken to reach the top

Answer 1

Answer:

Initial velocity of the object is u.

Acceleration due to gravity acting on the object is a=−g

At maximum height (h) attained, velocity of the object is zero i.e. v=0

Using v

2

−u

2

=2ah

Or 0−u

2

=2(−g)h

⟹ h=

2g

u

2

Thus we get h∝u

2

So, maximum height attained is directly proportional to the square of the initial velocity.

Hence the reason statement is correct but the assertion statement is incorrect.

Explanation:

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