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1)A basketball is dropped from a height of 2 m.
a. What is the coefficient of restitution if the ball is dropped on a steel plate andbounces 140 cm?
b. If the ball is dropped onto a piece of foam, the coefficient of restitution is reduced from the coefficient of restitution found in part (a) above by 0.2
i. What is the new coefficient of restitution?
ii. How high does the ball bounce?
2) If a soccer ball that is stationary and has a mass of .45 kg is kicked by a player and leaves his foot at 23 m/s, and the foot was in contact with the ball for 0.01 s, what is the average force applied to the ball by the foot?
A car (mass 930 kg) is traveling with a speed of 48 mi/h. A bug (mass 6 mg) is traveling in the opposite direction. What speed would the bug need
You are a space traveller and you land on the surface of a new planet. You decide to drill a tunnel through the center of the planet to the opposite side of the planet. How long will it take to make it to the other side of the planet
A steel bridge is built in the summer when its temperature is 35.5oC. What is the length of the bridge on a cold winter day when its temperature is -11.5 oC
A thin 11-cm-long solenoid has a total of 440 turns of wire and carries a current of 1.9A, Calculate the field inside the solenoid near the center
A rock is thrown downward into a well that is 8.90 deep. If the splash is heard 1.20 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343 m/s.
A 106 m long train begins uniform acceleration from rest. The front of the train has a speed of 23 m/s when it passes a railway worker who is standing 230 m from where the front of train started. What will be the speed of last car as it passes the..
the half-life of a muon at rest is 1.52 us. One can store muons for a much longer time by accelerating them to a speed very close to that of light, How fast will the muons have to be moving
An RC circuit with 2.50 ?F and 7.60 M?? includes a 6.00 volt source, What is the time constant for charging the capacitor
A worker drops a wrench from the top of a tower 88.00 m tall. With what velocity does the wrench strike the ground? (Suppose the positive direction is upward.)
A worker pushes a sled with a force of 50 N over a level distance of 7.0 m. what net work is done on the sled
A projectile is launched vertically from the surface of the earth with an initial speed of 7.00 km/s. At what height (km) will it stop and begin to fall back to the surface of the earth
A converging lens (f = 11.9 cm) is located 30.6 cm to the left of a diverging lens (f = -5.94 cm). calculate the overall magnification
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