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.)
Homework Answers
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 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?
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?
5. A 1000-kg car is at the top of a hill as shown, where its elevation...
5. A 1000-kg car is at the top of a hill as shown, where its elevation above the bottom of the hill is 120 m. a. What is its gravitational potential energy? 120 m b. If the cart starts from rest and rolls down the hill with negligible friction and air resistance, what will its kinetic energy be when it reaches the bottom? c. What will be its speed when it reaches the bottom? Suppose instead that there is noticeable...
4. A car is parked on a hill as shown in the figure. If the handbrake...
4. A car is parked on a hill as shown in the figure. If the handbrake fails, and assuming no friction, what speed is the car travelling at when it reaches the bottom of the slope? Work this out using (a) Newton's 2nd law and the relevant kinematic equations and (b) using the work- kinetic energy theorem
A car with a mass 1,000kg is parked on a hill with a slope of 7.0°....
A car with a mass 1,000kg is parked on a hill with a slope of 7.0°. The parking brake is released and the car starts to roll down the hill. A) Assuming that friction is negligible, what will be the force that moves the car down the hill. B) What will be the speed of the car after 50 seconds?
1t A student is building a model roller coaster. The car rolls down from a standing...
1t A student is building a model roller coaster. The car rolls down from a standing start at the top of the first hill, which is 2 m high. The car fails to make it up to the top of the second hill, which is 2.1 m high. Ignoring friction and air resistance, which is MOST LIKELY the source of the problem? A. The car has too much mass B. The second hill is higher than the first * C....
4. A 5000 kg railroad car starts from rest at the top of a 105 m...
4. A 5000 kg railroad car starts from rest at the top of a 105 m high hill and rolls to the bottom after a horizontal displacement of 1000 m. At the bottom of the hill its speed is 9.97 m/s. What is the coefficient of rolling friction between the railroad car and the steel tracks?
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...
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.
5. A 1000-kg car is at the top of a hill as shown, where its elevation above the bottom of the hill is 120 m. a. What is its gravitational potential energy? 120 m b. If the cart starts from rest and rolls down the hill with negligible friction and air resistance, what will its kinetic energy be when it reaches the bottom? c. What will be its speed when it reaches the bottom? Suppose instead that there is noticeable...
4. A car is parked on a hill as shown in the figure. If the handbrake fails, and assuming no friction, what speed is the car travelling at when it reaches the bottom of the slope? Work this out using (a) Newton's 2nd law and the relevant kinematic equations and (b) using the work- kinetic energy theorem
1t A student is building a model roller coaster. The car rolls down from a standing start at the top of the first hill, which is 2 m high. The car fails to make it up to the top of the second hill, which is 2.1 m high. Ignoring friction and air resistance, which is MOST LIKELY the source of the problem? A. The car has too much mass B. The second hill is higher than the first * C....
4. A 5000 kg railroad car starts from rest at the top of a 105 m high hill and rolls to the bottom after a horizontal displacement of 1000 m. At the bottom of the hill its speed is 9.97 m/s. What is the coefficient of rolling friction between the railroad car and the steel tracks?
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.
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