A body thrown vertically upwards reaches a maximum height h . It then returns to
ground. The distance and the displacement travelled by the body respectively
are
(a) 2h , zero
(b) h , zero
(c) zero, 2h
(d) zero,h
Answers
Answer:
For the first half, when ball A goes up
VA = UA − gT VB
= − gTV AA = VA−VB
VA−VB
VA−VB
VA−VB VVA =U.......(1)
=U.......(1)For the second half, when ball A comes downVA
= − gT V B
B
B = 0V AB
0V AB
0V AB = VV − VB
B
B = VVA =−gT........(2)
=−gT........(2)Hence from the equation (1) we observe that relative velocity is independent of T. Which will be valid till ball A reaches maximum height point. It is given time taken in reaching h is t.
=−gT........(2)Hence from the equation (1) we observe that relative velocity is independent of T. Which will be valid till ball A reaches maximum height point. It is given time taken in reaching h is t.Hence for the time t, V AB
=−gT........(2)Hence from the equation (1) we observe that relative velocity is independent of T. Which will be valid till ball A reaches maximum height point. It is given time taken in reaching h is t.Hence for the time t, V AB
=−gT........(2)Hence from the equation (1) we observe that relative velocity is independent of T. Which will be valid till ball A reaches maximum height point. It is given time taken in reaching h is t.Hence for the time t, V AB will be constant, whereas after time t, relative velocity changes its direction and increases afterwards.
Answer:
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