Question

calculate the force required to impact a car,a velocity of 30m/s in 10 second. the mass of the car is 1500kg

Answer 1

V=u+at
30=0+a*10
10a=30
A=3m/sec²
Force =mass *acceleration
=1500*3=4500N

Answer 2

mass = 1500kg
initial velocity = 30 m/s
final Velocity = 0m/s
time = 10 sec
Force = m(v-u)/t
= 1500(0-30)/10

$4500 \: kg \: m {s}^{ - 1}$
= 4500N