Considering no air drag, if a ball starts moving on a frictionless horizontal surface, it will:

never stops

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stops after long duration

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stops after short duration

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cannot be determined

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Solution

The correct option is A never stops
Considering no air drag, if a ball starts moving on a frictionless surface, it will keep moving at a constant speed.

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Q. Considering no air drag, if a ball starts moving on a frictionless horizontal surface, it will:

Q. A ball of mass

m

moving with constant horizontal velocity

u

strikes a stationary wedge of mass

M

on its inclined surface as shown in the figure. After collision the ball starts moving up the inclined plane. The wedge is placed on frictionless horizontal surface.
a) Calculate the velocity of wedge immediately after collision.
b) calculate the maximum height the ball can ascend on the wedge.

A ball of mass $^{'} m^{'}$ moving horizontally which velocity $^{'} u^{'}$ hits a wedge of mass $^{'} M^{'}$ . the wedge is situated on a smooth horizontal surface. If after striking wedge the ball starts moving in vertical direction and the wedge starts moving in horizontal plane. Calculate the coefficient of restitution $e$ .