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5. An object is traveling at 20 m/s, but is accelerating at -5 m s2. After...
3. A ball is thrown straight up from an initial height of 1.75 m. It hits the ground eight seconds later. What was the initial s eed of the ball? 4. You are at the helm of the USS Sisko about to set out for Arrakis, the maiden voyage of the first exploratory star cruiser commissioned by the UAC. The ship is at dock near Magrathea and is not currently moving, but your captain, Malcom Reynolds, wants to test the...
You get on your bicycle and ride it with a constant acceleration of 0.5 m/s2 for 20s. After that, you continue riding at a constant velocity for a distance of 200 m. Finally, you slow to a stop, with a constant acceleration over a distance of 20 m 350 300 250 x (m) 200 150 100 50 10 30 t (s) 10 v (m/s) 10 10 a (m/s2) (a) How far did you travel while you were accelerating at 0.5...
A dragster is accelerating at 20 m/s2 while traveling 40 m/s. The back wheels are 1.5 m in diameter. What is the velocity at the top of the tire? What is the acceleration of this point?
1. The velocity of an object traveling along the x-axis changes from 20 m/s to 60 m/s in 10 seconds. What was the displacement that occurred during this time? 2. An object moving along the x-axis initially has a velocity of 60 m/s and is slowing rest? down at the rate of 4 m/s per second. How far (in meters) will it travel before coming to 3. An accelerating object travels 12 meters from rest in a certain time. How...
2) a ) A train passes a point, already traveling at 2.0 m/s and accelerating at 0.6 m/s / s . Write down the equation that describes the train’s position. A girl on her bicycle reaches that very point 4 seconds later and begins to ride at a constant velocity v in order to catch the train. Write down the equation that describes her position. b) Show that she will never catch the train if her velocity is 6 m/s...
A car traveling at 20 m / s slows down at a rate of 0.50m / s2. Calculate: a) The distance the car traveled when it stopped. b) The time it takes to stop. c) The distance traveled by the car in the first three seconds after it begins to decelerate.
A student measures the velocity of an object moving along a track. At time t = 0 s, the object is moving at a constant 4.0 m/s in the positive x-direction. At time t = 3.0 s, the object begins to slow, stops at t = 5.0 s, and then moves in the opposite direction. At t = 6.0 s, the object as reached a speed of -2.0 m/s. It moves at this speed until the student quits taking data...
Please show work 3. A car traveling at a constant 39 m/s (-87 mph) passes a police car that is initially traveling at 25 m/s (55 mph). At the instant of the pass, the police car accelerates at a constant rate of 3.3 m/s in pursuit. We wish to find how much time elapses before the officer catches the car. (a) Identify the initial states when the car passes the police. (b) Define the final state or conditions which enable...
1. The graph shows the motion of an object traveling in a straight line as a function of time. What is the average speed of the object during the first two seconds? 5 m/s 2.5 m/s 10 m/s 20 m/s 2. Using the velocity versus time graph, what was the average acceleration of the object during segment B? 0 m/s/s 20 ms/s 10 m/s/s 5 m/s/s 3. Remember to identify all your data, write the equation, and show your work....
A speedboat starts from rest with a constant acceleration of +1.50 m/s2. After 4.00 seconds, its acceleration changes to +1.00 m/s2. After another 5.00 seconds, its acceleration changes to zero and the boat travels with constant velocity for a further 10.0 seconds. The boat then slows down and stops by accelerating at -2.00 m/s2. 1. Calculate the velocity and displacement of the boat at t = 4.00 seconds. 2. Calculate the velocity and displacement of the boat at t =...