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An open lift is moving upward with veloc...

An open lift is moving upward with velocity `10 m//s.` It has an upward acceleration of `2 m//s^2.` A ball is projected upwards with velocity `20 m//s` relative to ground. Find
(a) time when ball again meets the lift
(b) displacement of lift and ball at that instant.
(c) distance travelled by the ball upto that instant.
Take `g=10 m//s^2`

Text Solution

Verified by Experts

For the ball `u uparrow downarrowa`. Therefore, we will first find `t_B` , the time when its velocity becomes zero
`t_0=|u/a|=(20)/(10)=2s`
As `t(=5/3s)
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