Question

The ratio of the heights from which two bodies are dropped is 3:5 respectively. The ratio of their final velocities is: a) 9:25b) sqrt 3: sqrt 5c)5 :3d) sqrt 5: sqrt 3​

Answer 1

Explanation:

Correct option is

B

3

:

5

Initial velocity u=0

Using v

2

−u

2

=2gS

Or v

2

−0=2gS

⟹ v=

2gS

⟹ v 1:v 2= S 1 : S 2 = 3 : 5

Answer 2

Explanation:

Correct option is

B

3

:

5

Initial velocity u=0

Using v

2

−u

2

=2gS

Or v

2

−0=2gS

⟹ v=

2gS

⟹ v

1

:v

2

=

S

1

:

S

2

=

3

:

5