A ball of mass m=1kg strikes a smooth ho...

A ball of mass `m=1kg` strikes a smooth horizontal floor as shown in figure. The impulse exerted on the floor is

(a) `6.25Ns`

(b) `1.76Ns`

(d) `2.2Ns`

Text Solution

Verified by Experts

The correct Answer is:

Component parallel to plane remains unchanged.
`:. 0.8v=3`
or `v=(3)/(0.8)=3.75m//s`

`|Deltav|=(4+0.6v)=6.25m//s` (in vertical direction)
`:. Impu lse=|Deltap|=m|Deltav|=6.25N-s`

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