Work, Power and EnergyHard
Question
A sphere of radius 2 cm, moving with a velocity of 81 cm/s, collides with another sphere of radius 4 cm at rest. The collision is head−on and perfectly elastic. The velocity of the sphere at rest after the collision will be :-
Options
A.81 cm/s
B.18 cm/s
C.144 cm/s
D.Zero
More Work, Power and Energy Questions
The potential energy for the force = yzî + xaĵ + xy, if the zero of the potential energy is to be chosen at th...A ball ′A′ moving with a speed of 90 ms−1 collides directly with another identical ball ′B′...A motor drives a body along a straight line with a constant force. The power P developed by the motor must vary with tim...The relation between conservative force and potential energy U is given by :-...A simple pendulum is oscillating without damping. When the displacement of the bob is less than the maximum, its acceler...