Kinematics Question 190

Question: A particle is projected up with an initial velocity of 80ft/sec . The ball will be at a height of 96ft from the ground after [MP PMT 1985]

Options:

A) 2.0 and 3.0 sec

B) Only at 3.0 sec

C) Only at 2.0 sec

D) After 1 and 2 sec

Show Answer

Answer:

Correct Answer: A

Solution:

h=ut12gt296=80t322t2
t25t+6=0t=2 sec or 3 sec



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