Question

1) A body projected upwards with a certain velocity. What would be the magnitude of its displacement in the last second of its upward motion?

2) Two cars A and B move such that car A moving with a uniform velocity of 15m/s overtakes car B which is moving from rest with an acceleration of 3m/s2. After how much time will they meet again?

3) 3) A body is dropped from certain height H. If the ratios of the distances traveled by it in (n-3) seconds to (n-3)rd second is 4:3, find the value of H.

Answer 1

Hello there,

u is the initial velocity.

The answer to your question is in the attached pics.

Please refer the pics for the step-by-step explanation for your problem.

1) (u²/19.6) m

2) Not available

3) 4.9 m

Hope you find my answer useful.

Harith