10. A 400 kg car rear ends a 600 kg truck on the road and both drivers claimed to be driving the speed limit of 70 km/hr and that the other is
at fault. The driver of the car says the truck driver unnecessarily
slammed on his breaks causing the car to rear end the truck. The
truck driver says the car was speeding and failed to slow down in
time and rear ended the truck. Who is telling the truth?
a. A test found that the force of friction between the vehicles' tires
and the road has a maximum force of 8,000 Newtons acting on
the vehicles. If the vehicles crash inelastically and skid down the
road for 25 meters before stopping, how fast were the vehicles
traveling immediately after colliding? (4 pts)
b. What is the total momentum of the vehicles before the crash? (3
pts)
c. Which driver was telling the truth? You will need to use answers
from previous parts of this question in your justification. (3 pts)
!?