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A lift is moving up with acceleration a ...

A lift is moving up with acceleration a `A` person inside the ligt throws the ball upwards with a velocity `u` relativeto hand.
a. What is the time of flight of the ball?
b. What is the maximum height reached by the ball in the lift?

Text Solution

Verified by Experts

a.`vec a_(BL)=vec a_(B)-vec a_(L) =g+a`
`vec s=vec u t+(1)/(2) vec a_(BL)t^(2), 0=uT -(1)/(2)(g+a)T_(1)^(2)`
b. `v^(2)-u^(2)=2` as
`0-u^(2)=-2 (g+a)H rArr H=u^(2)/(2 (g+a))`.
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