1. A cart on wheels is pushed for 12 m accelerating the cart at a rate of 1.5 m/s [E]. If the push lasts for 5 seconds, what was the initial velocity of the cart? [3 marks] 2. Samir drives 250 km [E] and then 300 km [W] in a total time of 5 hours. [3 marks] a) What is Samir's average speed? b) What is Samir's average velocity? 3. A freight train travelling at a velocity of 40 m/s [right] applies the brakes to slow down to a velocity of 10 m/s [right] over a distance of 5 km. How long did it take for the train to slow down? [3 marks]