Question

A lift ascends with a constant acceleration of 4m/s?, then with a constant velocity v and then
moves with a constant retardation of 4m/s to finally come to rest If the total height ascended
be 20 m and the total time taken be 6 s, then the time during which the lift was moving with
constant velocity v is
(a) 2 s
(b)3 s
(c) 4 s
(d) 5 s​

Answer 1

Answer:

your answer is c : 4

Explanation:

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