Answer:
average force is 138900 N
Explanation:
given data
speed = 50 km/h = 13.89 m/s
mass = 1500 kg
time = 0.15 s
to find out
average force
solution
we know initial velocity of car is positive
we will apply here equation to find force that is
Force x change in time that is equal to mass x change in speed ................1
so put here all value of mass, time and velocity in equation 1
Force x 0.15 = 1500 x ( -13.89)
force = 138900 N
so average force is 138900 N