A moving car approaches a hill that is 23.031 m high and at an angle of...
A moving car approaches a hill that is 23.031 m high and at an angle of 20 degrees. The coefficient of static friction is 0.523. How fast is the car moving if it just manages to coast from the bottom the hill and make it to the top?
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A moving car approaches a hill that is 23.031 m high and at an
angle of...
A moving car approaches a hill that is 17.218 m high and at an angle of...
A moving car approaches a hill that is 17.218 m high and at an angle of 20 degrees. The coefficient of static friction is 0.33. How fast is the car moving if it just manages to coast from the bottom the hill and make it to the top?
A car is parked at the top of a 46 m -high hill. It slips out...
A car is parked at the top of a 46 m -high hill. It slips out of gear and rolls down the hill. How fast will it be going at the bottom? (Ignore friction.)
A car of mass 850 kg is initially moving at 110 km/h at the bottom of...
A car of mass 850 kg is initially moving at 110 km/h at the bottom of a large hill. Friction coefficient of 0.9 (rubber on dry asphalt) a) How high up the hill can the car coast (engine disengaged), if work done by friction is negligible? b) If, in actuality, the car is observed to coast up to a height of 22.o m above its starting point, how much thermal energy was generated by friction?
A sled with mass 30 kg slides 40 m down a hill angled at 20 degrees...
A sled with mass 30 kg slides 40 m down a hill angled at 20 degrees to the horizontal. The coefficient of friction between the sled and the ground is 0.2. a) How much work does gravity do on the sled? b) How much work does the normal force do on the sled? c) How much work does friction do on the sled? d) What is the net work done on the sled e) if the sled begins at rest...
a 1750kg car is parked at the top of a hill with an incline of 12...
a 1750kg car is parked at the top of a hill with an incline of 12 degrees. Its brakes fail and the car starts rolling down the hill. a) how long will it take for the car to travel 200m and reach the bottom of the hill? (the coefficient of rolling friction between the tires and the road is 0.10) b) what will be its velocity at the bottom?
A 1250 kg car drives up a hill that is 16.2 m high. During the drive,...
A 1250 kg car drives up a hill that is 16.2 m high. During the drive, two nonconservative forces do work on the car: (i) the force of friction, and (ii) the force generated by the car's engine. The work done by friction is -2.91 times 10^5 J; the work done by the engine is 6.64 times 10^5 J. Find the change in the car's kinetic energy from the bottom of the hill to the top of the hill.
a) How high a hill can a car coast up (engine disengaged) if friction is negligible...
a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 78.0 km/h? m (b) If, in actuality, a 750 kg car with an initial speed of 78.0 km/h is observed to coast up a hill to a height 10.0 m above its starting point, how much thermal energy was generated by friction? J (c) What is the average force of friction if the hill has a slope 2.5° above...
A toboggan approaches a snowy hill moving at 13.3 m/s . The coefficients of static and...
A toboggan approaches a snowy hill moving at 13.3 m/s . The coefficients of static and kinetic friction between the snow and the toboggan are 0.430 and 0.310, respectively, and the hill slopes upward at 45.0 ∘ above the horizontal. Part A Find the acceleration of the toboggan as it is going up the hill. Assume +x axis directed up the hill. ax = m/s2 SubmitMy AnswersGive Up Part B Find the acceleration of the toboggan after it has reached...
1. A boy takes a running jump off the high-dive board at the local pool. His...
1. A boy takes a running jump off the high-dive board at the local pool. His speed as he leaves the board is 3.0 m/s and the board is 5.0 m above the water. What is his speed just before he hits the water? please include an energy chart 2. A roller-coaster car rolls over the crest of 18 m high hill at a speed of 3.2 m/s. The car then rolls down the track to the bottom of the...
The 1930 kg cable car shown in the figure descends a 200-m-high hill. In addition to...
The 1930 kg cable car shown in the figure descends a 200-m-high hill. In addition to its brakes, the cable car controls its speed by pulling an 1760 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are negligible. (Figure 1) Part A How much braking force does the cable car need to descend at constant speed? Express your answer with the appropriate units. Value Units Submit Request Answer...
A 1250 kg car drives up a hill that is 16.2 m high. During the drive, two nonconservative forces do work on the car: (i) the force of friction, and (ii) the force generated by the car's engine. The work done by friction is -2.91 times 10^5 J; the work done by the engine is 6.64 times 10^5 J. Find the change in the car's kinetic energy from the bottom of the hill to the top of the hill.
The 1930 kg cable car shown in the figure descends a 200-m-high hill. In addition to its brakes, the cable car controls its speed by pulling an 1760 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are negligible. (Figure 1) Part A How much braking force does the cable car need to descend at constant speed? Express your answer with the appropriate units. Value Units Submit Request Answer...
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