Home
Class 11
PHYSICS
A body projected vertically upwards with...

A body projected vertically upwards with a velocity u returns to the starting point in 4 seconds. If `g = 10m//sec`, the value of u is

A

5m/sec

B

10m/sec

C

15m/sec

D

20m/sec

Text Solution

Verified by Experts

The correct Answer is:
D
Time of flight = `(2u)/(g)`
`rArr 4 = (2u)/(10) rArr u = 20m//s`
Promotional Banner

Similar Questions

Explore conceptually related problems

A body is projected vertically upwards with some velocity u . It at the same point at t = 6 s as was at t = 4 s . Find the value of u .

A player throws a ball vertically upwards with velocity u. At highest point,

A body is thrown vertically upwards with a velocity u . Find the true statement from the following

A body is projected vertically upwards with a velocity u it crosses a point in its journey at a height h twice just after 1 and 7 seconds. The value of u in ms^(-1) is (g=10ms^(-2))

A ball thrown vertically upward returns to its starting point in 4 s. Find its initial speed.

A body is projected with the velocity u_(1) from the point A as shown in Figure. At the same time another body is projectd vertically upwards with the velocity u_(2) from the point B. What shold be the value of (u_(1))/(u_(2)) for both the bodies to collide.