A cricket ball is hit vertically in the air. It takes 10 seconds to come down again. How high did it go?

1

1. A cricket ball is hit vertically in the air. It
   takes 10 seconds to come down again. How high did
   it go?
2. A car brakes sharply and reaches a total stop
   from 50m/s in 12seconds. How far did it travel in
   this time?
3. What was the acceleration involved in the
   previous question? What force would a 100kg
   passenger in the car feel?
4. u8m/s. v16/s. t13s. What does a equal?
5. A parachutist opens his canopy and slows from
   terminal velocity of 180miles per hour to a safe
   landing speed of 10 miles per hour with an
   acceleration of 2g. How long does the
   acceleration take?