b) When a car driver travelling at 50 kmh on a straight road sees a cow 20 m ahead, he TM instantly hits the brakes. His breaking deceleration is 4.3 ms2. i. the speed at which the car collides with the cow. ii. minimum time he should apply his brakes to avoid hit hitting the cow.

Page 5 of 8 5. As I drive on a back-country road, I suddenly see a deer "frozen" in the headlights. I was driving at 11.4 m/s, but immediately apply the brakes and slow with an acceleration of 3.80 ". a. If the deer was 20.0 m from my vehicle when the brakes were applied, how close did I come to hitting the deer? b. How much time was needed for my vehicle to stop?

2. The rocket starts from rest to and travels straight up. Its . C. height above the ground can be approsimated by the functions S = bt+ct*where "b" and "e are constants. At t-10 seconds, the rockets velocity and acceleration are v229 m/s and an28.2 m/s. a Determine the value of S at t-5 seconds b. Determine the value of its velocity at t-5 seconds Determine the value of its acceleration at t-5 seconds

1. Rushin is waiting at a stoplight. When it finally turns green, Rushin accelerated from rest at a rate of a 2.00 m/s² for a time of 15 seconds. Determine the velocity of Rushin's car during this time period. -30 m/s? с. 7.5 m/s a. b. 30 m/s? d. 30 m/s 2. Ima is approaching a stoplight moving with a velocity of +30.0 m/s. The light turns yellow, and Ima applies the brakes and skids to a stop. If Ima has an acceleration rate of 8.00 m/s², determine the displacement of the car during the skidding process. 56.3 m cannot determine a. с. b. 240 m d. 4.3 m 3. A car slows down uniformly from a speed of 21.0 m/s to rest in 6.00 seconds. What was its average velocity? How far did it travel in that time? 10.5 m/s; 0.29 m 10.5 m/s; 63 m b. 21.0 m/s ;126 m a. с. d. cannot determine