Question 5 (5 marks) A car is originally moving at a constant velocity of 1 ms 1. It then accelerates at 2 ms 2 for 0.5

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Question 5 5 Marks A Car Is Originally Moving At A Constant Velocity Of 1 Ms 1 It Then Accelerates At 2 Ms 2 For 0 5 1 (49.39 KiB) Viewed 22 times

Question 5 (5 marks) A car is originally moving at a constant velocity of 1 ms 1. It then accelerates at 2 ms 2 for 0.5 second. What is its velocity afterwards? Question 6 (5 marks) A particle with u= 80 m/s and zero acceleration for first 5 sec. The particle is then slowed down with acceleration of -15 m/s2 How far has it traveled after 5 sec more? Find its velocity at that time. Given, ut & a u = 80 m/s t = 5 sec t = 5 sec a=0 a = -15m/s2 Question 7 (20 marks) In a traffic accident, a truck A of 5800 kg was broken down and parked in the fast lane. The driver of another truck B did not notice truck A. He ran into truck A and both trucks moved forwards for 32m after the collision. Assume the mass of truck B was 2900 kg. The friction acting on each track was 3500 N during the collision and the friction acting on the trucks was 6500 N when they moved together. (a) What was the speed of the trucks after the collision? (b) If the time of the collision was 0.06s, what was the force acting on truck A by truck B? (c) What was the force acting on truck B by truck A? (d) Find the speed of truck B before the collision.