Question

Q40.
An object is thrown vertically upward with initial velocity of 20 ms. After how much time its velocity
reducesto
zero?
(A) 1 sec
B) 4.5 sec
(C) 2 sec
(D) not possible ​

Answer 1

Answer:

V = U + gt

0 = 20 -10 t

t = 2 sec.

Answer 2

Answer:

B) 4.5 sec....given in the digest prefer it for better understanding