Draw and label the following questions.

 

 A$)$ A rock is thrown $($from the ground$)$ at $60$^o above the horizontal as a speed v$0.$ How high is the rock at the apex of its flight? 

 

B$)$ A massive truck travelling at speed v$0$ crashes into a stationary car. During the collision the two vehicles bounce away from each other. If M truck $=2$m car, how fast does the truck travel immediately after the collision?