During an experiment in which you are investigating the acceleration changes due to force changes, what value must stay constant during these trials? X a. Force b. Velocity c. Acceleration d. Mass
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Q: ok i understand much better now but where did the 0.258 come from (multiplied to 17)
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- The CERN particle accelerator is circular with a circumference of 7.0 km. (a) What is the acceleration of the protons (m=1.671027kg)that move around the accelerator at 5of the speed of light? (The speed of light is v=3.00108m/s .) (b) What is the force on the protons?. As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. (a) What is the baseball’s acceleration in m/s and in Ws? (b) What is the size of the force acting on it?A 60.0 kg skier is moving down a snowy hill inclined at 5 degrees above the horizontal withan acceleration of 0.4m/s2a. What is the acceleration of the same skier when she is moving down a hill with aslope of 10 degrees? Assume that the coefficient of friction is the same for bothcases.b. How much time will it take her to move 25.0m along 10 degree slope?c. After 25.0m, the slope levels out and becomes flat and smooth. She skis into asnowbank which slows her to a stop in a distance of 0.80m. How much forcedoes the snowbank exert on her?d. How much force does she exert on the snowbank?
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- 1. The brakes of a 1000kg car exert 3000N How long will it take the car to come to a stop from a velocity of 30 m/s? How far will the car travel during this time? 2. Draw the FBD of the following. An egg is free-falling from a nest in a tree. Neglect air resistance. A rightward force is applied to a book in order to move it across a desk with a rightward acceleration. Consider frictional forces. Neglect air resistance.A 0.623 kg. basketball is dropped from the rooftop of a building. If it took the ball 3.5 seconds to reach the ground, the speed of the ball before it touches the ground is 34.3 m/s the height of the building is 60.025 m c. What is the ball's acceleration half-way down the building?d. What is the ball's velocity half-way down the building?Moments after making the dreaded decision to jump out the door of the airplane flying at 10,682 feet, a skydiver's 85.4-kg body experiences 116 N of air resistance. The m/s?. magnitude of the skydiver's downward acceleration at this instant in time is Use the approximation g = 10 m/s?. LFBD skydiver small air res.png