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`