4. Calculate the force required to impact a car with velocity of 30m/s in 10 secs. The mass of the car is 1500 kg
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u=0
v=3m/s
t=10s
a=v-u/t
a=3-0/10=
=3/10m/s×s
f=ma
=15000×3/10
=4500N
v=3m/s
t=10s
a=v-u/t
a=3-0/10=
=3/10m/s×s
f=ma
=15000×3/10
=4500N
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