Two cars approach along icy streets which meet at a right angle to one another. The cars collide and stick together. One car has a mass of 1200 kg and had a speed of 30 km/h in the +x direction before the collision. The second car has a mass of 1500 kg and was traveling in the +y direction before the collision. After the collision, the wreakage moved off at an angle of 64o to the x axis.

Question

Two cars approach along icy streets which meet at a right angle to one another.  The cars collide and stick together.  One car has a mass of 1200 kg and had a speed of 30 km/h in the +x direction before the collision.  The second car has a mass of 1500 kg and was traveling in the +y direction before the collision.  After the collision, the wreakage moved off at an angle of 64o to the x axis. 
a) What was the initial speed of the heavier car? 
b) What percentage KE was lost in the collision?

Help ASAP please!! Step by step to get the answers

bobpursley · Answer

What is it you do not understand here?

Anonymous · Answer

What equation to use and how to substitute it into the equation