This will help you with the physics practice problems:
Acceleration worksheet, question #2, time = 5.5 seconds
Motion worksheet #2, question 4, final velocity is 1.9 m/s
Motion worksheet #2, question 5, time = 0.0000113 seconds
Motion worksheet #2, question 6, time = 1.42 seconds
Home made car dimensions (made out of recycled materials only): 24cm long X 12 cm high X 12 cm wide