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1. Barry Allen (The Flash) beats Superman in a race and earns the title as the fastest man alive. He ran a distance of 164.6

1. Barry Allen (The Flash) beats Superman in a race and earns the title as the fastest man alive. He ran a distance of 164.6 km 9.72 s. Assuming that he ran with a constant speed equal to his average speed, and his kinetic energy was 9.37 gigajoules, what was Barry's mass in kilograms? 2. A car accelerates from rest to 3.9 m/s in 1.6 seconds. How far (in meters) did it travel during this time period? 3. An aeroplane of mass 90 500. kg lands with an initial velocity of 83.4 m/s and then decelerates at 2.4 m/s2 for 13.7 s. What is the displacement of the aeroplane? 4. Two swimmers relax close together on air mattresses in a pool. One of the swimmer's mass is 48 kg, and the other's mass is 55 kg. If the swimmers push away from each other. Which of the following is true? 5. You know that your friend's car starts at Linden at 1:30 pm and finally arrives at UG at 2:15 pm, but you don't know the route that your friend took. (It is not necessarily the shortest nor the most efficient route and it may have included stops, detours, or side trips.) The straight-line length ("as birds fly") between Linden and UG is 7.33 km, but the car's final odometer reading shows that the car travelled a total distance of 11.68 km from start to finish. What is was the average speed of the car in km/h? Hi

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