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how much force is required to stop a bus of mass 5000 kg moving with a speed of 72km/h ?
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how much force is required to stop a bus (in 10 seconds) of mass 5000kg moving with a speed of 72km/
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Solution : Given , `vec(v) = 0,vec u = 72 km//h = 20 m//s , Deltat = 10s, m = 5000 kg` <br> ` vec(F) = (m(vec(v) - vec(u)))/(Deltat) = (5000 kg (0 - 20 m//s))/(10s)= -10^(5) N` <br> Force required to stop the bus = `10^(5)` N