Kinematics Question 184
Question: An object it’s projected upwards with a velocity of 100 $ m/s $ . It will strike the ground after (approximately) [NCERT 1981; AFMC 1995]
Options:
A) 10 sec
B) 20 sec
C) 15 sec
D) 5 sec
Show Answer
Answer:
Correct Answer: B
Solution:
Time of flight $ =\frac{2u}{g}=\frac{2\times 100}{10}=20\ sec $
