Questions
The velocity of a body of mass 20 kg decreases from 20 m/s to 5 m/s in a distance of 100 m. Force on the body is:
detailed solution
Correct option is C
Here initial velocity is u=20 m/s and final velocity is 5 m/s and distance travelled is 100 m. Then from the equationv2-u2=2as ; 52-202=2a×100 a=-25×152×100 and F=ma=-20×25×152×100=-37.5NTalk to our academic expert!
Similar Questions
Statement I : The familiar equation mg = R for a body on a table is true only if the body is in equilibrium.
Statement II : The equality of mg and R has no connection with the third law.
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