A 1000-kg auto travels up a 3 percent grade at 20 m/s. Find the horse power required, neglecting friction. (Note that a horsepower is defined as 756 )

Q: A student weighing 551 N climbs at constant speed to the top of an 14 m vertical rope in 17 s. What…

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Q: A 169.5 lb hiker is able to ascend a 1,980.0 ft high slope in 1 hour and 45 minutes. (a) How much…

A: Given : F = 169.5 lb d = 1980 ft t = 1 hour 45 minutes = 6300 seconds

Q: What would be the power output (in-hp) of a 1750kg car if it can acend to the top of a 285m high…

A: The expression of work- energy theorem,

Q: What average power does a 1,565 kg car need to go from 0 to 12.6 m/s in 6.86 seconds? Assume a…

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Q: A boy pulls a sled with a force of 10 lb for 100 ft. The rope attached to the sled is at an angle of…

A: Given: force applied by boy, F = 10 lb = 10(4.44822) = 44.4822 N  (since 1 lb force = 4.44822 N)…

Q: a 1200 kg sports car is advertised to accelerate from 0-100km/h in 3.00s. What is the power output…

A: Given value--- mass = 1200 kg. initial speed = 0 m/s. final speed = 27.78 m/s. time = 3 sec. We…

Q: When a 3600-lb automobile runs out of gas, it is pushed by its unhappy driver and a friend a quarter…

A: M = 3600 lb F =175 lb d = 0.250 mi = 1320 ft t = 15 min = 15 × 60 = 900 s

Q: eded to move a 3000 lb car up an 8 degree incline with a constant speed of 50 mph against a…

A: GivenWeight of car, W=3000 lbAngle, θ=8°Speed of car, v=50 mphFrictional force, f=80 lbs

Q: Calculate the minimum average power that a 35-kg human boy must generate in climbing up the stairs…

A: Given: mass of the boy (M) = 35 Kg            height of the building (h) = 170 m            Time…

Q: How much work done in k J( kilo joule) can a 3 hp (horsepower) motor do in 1 hour? (Write the full…

A: Power is the amount of force per unit velocity Power=force×velocity P=Force×distancetimeP×time=work…

Q: A car with a mass of 874 kg accelerates at a constant rate, from rest, to reaches 9.1 m/s in 5.6 s.…

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Q: A horse plows a 150 m-long furrow in 7 min, exerting a force of 750 N. What is its power output,…

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Q: What would be the power output in hp of a 1750 kg car if it can ascend to the top of a 285 m high…

A: Take the bottom of the hill to be at height zero. The potential energy of the car at the bottom of…

Q: Calculate the power output in watts and horsepower of a shot-putter who takes 1.20 s to accelerate…

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Q: A 500-kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a…

A: From work energy theorem:

Q: A cable lifts a 1200-kg elevator at a constant velocity for a distance of 35 m. What is the work…

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Q: A vehicle weighing 1200 kg can reach 90 km / h from a standstill in 8 seconds. Are the amount of…

A: Given: Mass of the vehicle, m =  1200 kg. Initial velocity of the vehicle, u = 0. Final velocity of…

Q: An ox can apply a maximum force of 1000N. It is taking part in a cart race and is able to pull the…

A: Power (P) equals force (F) times velocity (v).  P = F•v

Q: A boy pulls a sled with a force of 10 lb for 100 ft. The rope attached to the sled is at an angle of…

A: given Force applied F = 10 lb Distance travelled S = 100 ft Duration t = 45 s Angle between the…

Q: Suppose a 975-kg car can produce a useful power output of 45.5 hp (1 hp = 746 W).  (a) How long, in…

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Q: (a) How long (in s) will it take an 865 kg car with a useful power output of 38.0 hp (1 hp = 746 W)…

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