can you help withese problems?

20.00 m ........... ............... No movement by the wall is detected to have occurred as a result of the collision. The collision occurs over an interval of 1.500 seconds. Ignore the effects of friction when answering the following questions. a) What is the velocity of the car immediately after its centre of mass falls 20.00 m? [2 Marks] b) What is the impulse experienced by the car during the collision? [2 Marks] c) What is the average force experienced by the car during the collision? [2 Marks]