please answer the 9th qn
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Initial velocity = 20 km /h = 20×5/18 m s^-1 = 100/18 ms^-1 .
Final velocity = 35×5/18 m/s = 175/18 m/s .
Now , work done = Change in KE = 1/2× 1000{(175/18)^2 - (100/18^2) } J.
= 500( 63.65) J.
=31825J.
brainlyviswa:
why did 20×5/18 comes
ok i got it thanks bro
which class
give summary for force and law of motion
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