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Megan is sitting (at rest) at the top of a slide that is inclined 25o with respect to the horizontal. After traveling 5.0 m (the length of the slide), Megan's speed at the bottom of the slide is 5.3 m/s. Assume that friction is not negligible in this situation. If Megan's mass is 25 kg, how much does the thermal energy of the system increase during Megan's trip down the slide?
A car accelerates from rest to a kinetic energy of 1.65 x 10^5 Joules in a distance of 646 m. How much force did the car's engine deliver to produce the change in kinetic energy.
At rest, the car's horn sounds at a frequency of 455 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 427 Hz. What is speed of the car.
A particle with a mass of 4.10 × 10-20 kg is oscillating with simple harmonic motion with a period of 2.9 × 10-5 s and a maximum speed of 2.3 × 103 m/s.
A golfer tees off on level ground, giving the ball an initial speed of 38.5 m/s and an initial direction of 36.0° above the horizontal. (a) How far from the golfer does the ball land? (Neglect air resistance.)
A handball of mass 0.10 kg, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19m/s. What is the change in the momentum of the ball.
A 10-g bullet is fired horizontally into a 300-g wooden block initially at rest on a horizontal service and becomes embedded in it. The coefficient of friction between block and surface is 0.50. The combined system slides 4.0-m before stopping. Wi..
1. How much charge has been transferred from the negative to the positive terminal? Express your answer using two significant figures. 2.How much work has been done on the charges that passed through the battery? Express your answer using two sign..
The loaded cab of an elevator has a mass of 3.6 x 10^3 kg and moves 193m up the shaft in 20s at constant speed. At what average rate does the force from the cable do work on the cab.
An unstrained horizontal spring has a length of 0.37 m and a spring constant of 340 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes.
What is the frequency of the string.
Estimate the ball's rise in temperature.
A horizontal mass-spring system has low friction, spring stiffness 250 N/m, and mass 0.370 kg. The system is released with an initial compression of the spring of 10.8 cm, What is the maximum speed during the motion
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