A 2500kg automobile accelerates up a hill and increases speed from 10 mph to 55 mph...
A 2500kg automobile accelerates up a hill and increases speed from 10 mph to 55 mph along a 100m stretch of road. If the hill makes an angle of 5 degrees with the horizontal. Find the work done on the automobile.
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A 2500kg automobile accelerates up a hill and increases speed
from 10 mph to 55 mph...
A bicyclist maintains a constant speed of 4.00 m/s up a hill that is inclined at...
A bicyclist maintains a constant speed of 4.00 m/s up a hill that is inclined at 10.0 degrees with the horizontal. Calculate the work done by the person and the work done by gravity if the bicycle moves a distance of 19.0 m up the hill. The combined mass of the rider and the bike is 88.0 kg. 1) Calculate the work done by gravity. 2) Calculate the work done by the person.
A 72.5-kg skier coasts up a snow-covered hill that makes an angle of 22.9 ° with...
A 72.5-kg skier coasts up a snow-covered hill that makes an angle of 22.9 ° with the horizontal. The initial speed of the skier is 8.71 m/s. After coasting a distance of 1.19 m up the slope, the speed of the skier is 3.74 m/s. (a) Find the work done by the kinetic frictional force that acts on the skis. (b) What is the magnitude of the kinetic frictional force?
A 73.8-kg skier coasts up a snow-covered hill that makes an angle of 30.5 ° with...
A 73.8-kg skier coasts up a snow-covered hill that makes an angle of 30.5 ° with the horizontal. The initial speed of the skier is 8.02 m/s. After coasting a distance of 1.99 m up the slope, the speed of the skier is 3.83 m/s. (a) Find the work done by the kinetic frictional force that acts on the skis. (b) What is the magnitude of the kinetic frictional force?
A car increases its speed from 30 mph to 60 mph in 10 seconds. (a) Determine...
A car increases its speed from 30 mph to 60 mph in 10 seconds. (a) Determine your acceleration, in m / s2 , assuming it is constant. (b) What distance, in meters, does it travel in that time?
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in...
A van accelerates down a hill (see figure below), going from rest to 30.0 m/s in 6.30 s. During the acceleration, a toy m = 0.490 kg) hangs by a string from the van's ceiling. The acceleration is such that the string remains perpendicular to the ceiling. (a) Determine the angle e. (b) Determine the tension in the string. +-/2 points SerCP10 4.P.039. My Notes + Ask Your Teacher A dockworker loading crates on a ship finds that a 21-kg...
Problem 40 A bicyclist maintains a constant speed of 4.00 m/s up a hill that is...
Problem 40 A bicyclist maintains a constant speed of 4.00 m/s up a hill that is inclined at 10.0 with the horizontal. Calculate the work done by the person and the work done by gravity if the bicycle moves a distance of 19.0 m up the hill. The combined mass of the rider and the bike is 86.0 kg. 1) Calculate the work done by gravity. (Express your answer to three significant figures.) kJ Submit You currently have 2 submissions...
A 5-kg sled is sliding on a horizontal rough surface with a speed of 18 m/s....
A 5-kg sled is sliding on a horizontal rough surface with a speed of 18 m/s. The coefficier kinetic friction between the block and surface is 0.15. After travelling 25-m, it encounters as covered hill (where friction can be ignored) and slides uphill. The hill makes an angle of 38。 horizontal. (a) How much work is done against friction during the 25-m horizontal travel? the maximum elevation on the hill the block reaches? (c) How much work is done against...
A car has an initial speed of 118 km/h and climbs up an incline with its...
A car has an initial speed of 118 km/h and climbs up an incline with its engine DISENGAGED (no engine force). DON"T use scientific notation. Angle is 33 degrees. (a) If work done by friction is negligible, How high (the h in the figure) a hill can the car coast up (engine disengaged) before coming to a stop? (b) If, in actuality, a 700-kg car with an initial speed of 118 km/h is observed to coast up a hill to...
1. A projectile is shot from the ground at speed v0=10 m/s making an angle q=50...
1. A projectile is shot from the ground at speed v0=10 m/s making an angle q=50 degrees with the positive direction of the x-axis (horizontal). Find the time at which the velocity vector makes an angle of 30 degrees with the positive direction of the x-axis (horizontal).
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 van accelerates down a hill (see figure below), going from rest to 30.0 m/s in 6.30 s. During the acceleration, a toy m = 0.490 kg) hangs by a string from the van's ceiling. The acceleration is such that the string remains perpendicular to the ceiling. (a) Determine the angle e. (b) Determine the tension in the string. +-/2 points SerCP10 4.P.039. My Notes + Ask Your Teacher A dockworker loading crates on a ship finds that a 21-kg...
Problem 40 A bicyclist maintains a constant speed of 4.00 m/s up a hill that is inclined at 10.0 with the horizontal. Calculate the work done by the person and the work done by gravity if the bicycle moves a distance of 19.0 m up the hill. The combined mass of the rider and the bike is 86.0 kg. 1) Calculate the work done by gravity. (Express your answer to three significant figures.) kJ Submit You currently have 2 submissions...
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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