KinematicsHard
Question
A stone is projected vertically up from the bottom of a water tank. Assuming no water resistance it will go up & come down in same time but if water drag is present then the time it takes to takes to go up, tup and the time it takes to come down, tdown are releted as


Options
A.tup > tdown
B.tup = tdown
C.tup < tdown
D.Can not say
Solution
While moving up

& while moving down

∴ aup > adown

& while moving down

∴ aup > adown
Create a free account to view solution
View Solution FreeMore Kinematics Questions
A body starting from rest moves along straight line with a constant acceleration. The variation of speed (v) with distan...A ball is dropped vertically from a height d above the ground. It hits the ground and bounces up vertically to a height ...A particle is moving with uniform acceleration along a straight line. Its velocities at A & B are respectively 7m/s & 17...Two stones are projected from level ground. Trajectories of two stones are shown in figure. Both stones have same maximu...A paratrooper jumps from an aeroplane and opens a parachute after 2 s of free fall and starts deaccelerating with $3\tex...