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The average resisting force that must ac...

The average resisting force that must act on `5kg` mass to reduce its speed from 65 to `15ms^-1` in `2s` is

A

`12.5N`

B

`125N`

C

`1250N`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`Impu lse=F_(av)(Deltat)=|DeltaP|`
`:. F_(av)=(|DeltaP|)/(Deltat)=(m(v_i-v_f))/(Deltat)`
`=((5)(65-15))/(2)`
`=125N`
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DC PANDEY-CENTRE OF MASS, LINEAR MOMENTUM AND COLLISION-Level 1 Objective
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