Guys please give the answers of any of these..!!!!
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13(i)72kmph=72*5/18m/s
=20m/s
KE=1/2mv²
=1/2*2000*20*20
=1/2*2000*400
=1000*400
=400000J
New weight=2250kg
KE=1/2*2250*400
=450000J
=20m/s
KE=1/2mv²
=1/2*2000*20*20
=1/2*2000*400
=1000*400
=400000J
New weight=2250kg
KE=1/2*2250*400
=450000J
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