Police are investigating a collision involving a truck and a passenger car. It was found that immediately after collision both truck and car were entangled and moved in the path of C with speed of 15m/s. Figure Q2 (left) shows the situation before the collision and figure Q2 (right) after collision.
Before Collision

>x
After Collision m2= 1000kg vf= 15m/s ,= 20m/s Path C
Figure 02

a. Determine the speed of the truck just before the collision. b. Determine the direction of the truck just before the collision. c. Determine the total energy absorbed due to the collision.
>x
(7 marks) (1 marks) (4 marks) [Total 12 marks]