(a) A car has an initial speed of 25m/s and a constant deceleration of 3m/s. Determine the velocity of the car when t-4s. What is the displacement of the car during the 4s time interval? How much time is needed to stop the car? (b) A projectile is fired with an initial velocity of 250m/s at a target located at a horizontal distance of 4km and vertical distance of 700 m above the gun Determine the value of firing angle to hit the target Neglect air resistance.