1. A pickup truck with mass 1.88x10^3 kg is traveling eastbound at +16.0 m/s, while a compact car with a mass of 8.56x10^2 kg is traveling westbound at -16 m/s. The vehicles collide head-on, becoming entangled.

a) find the speed of the entangled vechicles after collision.

__________ m/s

b) Find the change in velocity of each vechicle.

__________m/s

___________m/s

c) find the change in the kinetic energy of the system consisting of both vechicles.

________J

2. Suppose the same two vechicles are both traveling eastward, the compact car leading the pickup truck. The driver of the compact car slams on the brakes suddenly, slowing the vechicle to 5.42 m/s. If the pickup truck traveling at 17.4 m/s crashes into the compact car, find the following.

a) the speed of the entangled vechicles after collision

________m/s

b) the change in velocity of both vechicles

______m/s

_______m/s

c)The change in kinetic energy of the system, from the instant before impact (when the compact car is traveling at 5.42 m/s) to the instant right after the collision.

____________J