(a) How long would it take a 1.50×105-kg airplane with engines that produce 100 MW of power to reach a speed of 250 m/s and an altitude of 12.0 km if air resistance were negligible? (b) If it actually takes 900 s, what is the power? (c) Given this power, what is the average force of air resistance if the airplane takes 1200 s? (Hint: You must find the distance the plane travels in 1200 s assuming constant acceleration.)

Q: How much work must be done to stop a 1100-kg car traveling at 111km / h ? (Hint: You will need to…

A:

Q: How much power is needed to uniformly accelerate a 1000-kg test car from 30 kph to 70 kph as it…

A:

Q: A 1000 Kg truck has a power output of 40. 0 kilo watts. Find the time (seconds) needed to accelerate…

A: Mass of truck, M=1000kg Mass of load, m=100kg Initial speed of truck, u=40m/s Final speed of truck,…

Q: (a) The roof of a large arena, with a weight of 250 kN, is lifted by 11 cm so that it can be…

A: Weight of the roof (F) = 250 kN.Lifted distance (d) = 11 cm. = 0.11 m.

Q: A man pushes a lawn mower with a horizontal force of 138 N. If he pushes the lawn mower 5.2 m in 15…

A:

Q: When its 80 kW engine is generating full power, a small single-engine airplane with mass 750 kg…

A: Given data:  Full power of engine (Pfull) = 80 kW Mass (m) = 750 kg Speed (v) = 2.5 m/s Required:…

Q: (a) How long (in s) would it take a 1.50 x 10 kg airplane with engines that produce of 100 MW of…

A: a) Power is defined as rate of doing work  which is given as- P=WtW=workt=timeThe work done by…

Q: Suppose the mass of a loaded elevator is 1700 KG. (A) what force, in newtons, must be supplied by…

A: Given that:- Mass of loaded elevator=1700kg

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: A superman cyclist rode a bike uphill at 20 miles/hour for two hours. To sustain this constant speed…

A:

Q: Elena and her classmates were attempting to measure the maximum power they can generate by running…

A: Given: mass of Elena, m = 55 kg Total height of staircase, h = 4 m Time to cover the staircase, t =…

Q: A 618-kg elevator starts from rest and moves upward for 3.10 s with constant acceleration until it…

A: Given Data: The mass of an elevator is, m=618 kg The time required to move upward is, t=3.10 s The…

Q: Motor-driven cable lifts a skier of 78 kg up a slope. (a) At a constant speed of 3.1 m/s, how much…

A:

Q: Suppose a car travels 108 km at a speed of 30.0 m/s, and uses 2.0 gal of gasoline. Only 30% of the…

A: Given that, The distane d is 108 km speed of car is 30 m/s V is 2 gal Work done is 30 % Gasoline is…

Q: A new record for running the stairs of the Empire State Building was set on February 4, 2003. Thee…

A:

Q: How long will it take a 742-kg car with a useful power output of 43.2 hp (1 hp equals 746 W) to…

A: Mass of car (M) = 742 kg  Output power of car = 43.2 hp  Power (P) = 43.2(746W) = 32227.2 W  Speed…

Q: A student who weighs 552 N climbs a stairway (vertical height of 3.5 m) in 20 s. (a) How much work…

A:

Q: How much work must be done to stop a 1300-kg car traveling at 112 km/h? (Hint: You will need to…

A:

Q: A bowling ball is dropped from the top of a building that has a height of ℎ=104m.  (a)Using energy…

A:

Q: An electric motor with an efficiency of 85% drives an elevator that raises 10 tons at a height of 85…

A:

Q: Find the work available for a car weighing 1290N, that travels 200. meters

A: 1)weight of car = 1290 N distance travelled = 200 m

Q: A 60.0-kg pilot went up the stairs entering the cockpit which is 2-m high from the ground. Determine…

A: mass of pilot (m) = 60 kg time taken to climb stairs = 3 minutes height of cockpit = 2 m horizontal…

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:

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: Consider a space colonist on a far off planet. They are trying to lift a box tied to a rope from the…

A: Let the weight of the box = w Let the height of first floor window from ground = h Let the…

Q: How long will it take a 751-kg car with a useful power output of 57.5 hp (1 hp equals 746 W) to…

A:

Q: How long (in s) would it take a 1.00 ✕ 105 kg airplane with engines that produce of 100 MW of power…

A: (a) The expression to solve for the kinetic energy of the airplane is as follows:…

Q: (a) How long would it take a 1.50×105 -kg airplane with engines that produce 100 MW of power to…

A: Given: Mass of airplane M = 1.5×105 kg Power produced by engine P = 100 MW Final speed of airplane v…

Q: A 1400-kgrace car can go from 0 to 100 km/h in 4.8 s . What average power is required to do this?…

A:

Q: How much work must be done to stop a 1200-kg car traveling at 115 km/h? (Hint: You will need to…

A:

Q: Starting from rest, a 60.0 kg student takes 4.0 s to run up a 3.0 m high flight of stairs. On…

A:

Q: A 694-kg elevator starts from rest and moves upward for 2.80 s with constant acceleration until it…

A: Data Given , Mass of the elevator ( m ) = 694 kg Elevator starts from rest , means  Initial velocity…

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

A:

Q: Elena and her classmates were attempting to measure the maximum power they can generate by running…

A: Given: The mass of the object is 55 kg. The height achieved by the object is 4 m. The time interval…

Q: A bicycle and rider going 13 m/s approach a hill. Their total mass is 75 kg. (a) What is their…

A: The initial velocity,