A ball is thrown vertically upwards from the ground with an initial velocity of 50ms-1. What is the total time spent by the ball in the air? (g = 10ms-2)
A
2.5s
B
5.0s
C
10.0s
D
15.0s
E
20.0s
Verified Correct Answer: C.
Physical Principles & Numerical Solution
Time to move up:
V = U - gt
0 = 50 - 10t
t = 5.
Total time spent on air = 2t = 10.0s
Source: Myschool Past Questions Archive (Record #16350)