A car speed increase from 20km/hr to 50km/hr of 3600 kg mass in 5 second.Determine tht external force applied on the car
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u=20km/h=20×5/18=50/9m/s
v=50km/h=50×5/18=125/9m/s
t=5sec
a=v-u/t
=(125/9-50/9)/5
=(75/9)/5=5/3m/s²
now force=ma=3600×5/3
=6000N
v=50km/h=50×5/18=125/9m/s
t=5sec
a=v-u/t
=(125/9-50/9)/5
=(75/9)/5=5/3m/s²
now force=ma=3600×5/3
=6000N
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