An engine uses 20000 N of force to power a car at an average speed of 5.0 m/s. What is the average power output of the engine? a. 0 W b. 0.00025 W c. 4000 W d. 10000 W e. 150000 W f. don't be silly, there is no correct answer here

Q: 7. A1,200 kg car accelerates from rest to 27 m/s in 6 seconds. How much power does the engine exert…

A: Given: Mass of the car = 1200 Kg The initial velocity of car = 0 The final velocity of the car =27…

Q: You throw a 17.0 NN rock into the air from ground level and observe that, when it is 14.0 mm high,…

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Q: Q1: A person weighs 155 lbs and is walking 3.1 miles per hour. How much kinetic energy does the…

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Q: A 70.0-kg athlete leaps straight up into the air from a trampoline with an initial speed of 8.9 m/s.…

A: The 70 kg athlete jumps off the trampoline with an initial velocity of 8.9 m/s. The force acting on…

Q: 11. A man uses a horizontal force of 200N to push a crate up a ramp 8m long that is 20° above the…

A: Work done by the man           =  Horizontal force ×distance travelled          =200…

Q: A spring-loaded gun fires a 0.090-kg puck along a tabletop. The puck slides up a curved ramp and…

A: From conservation of energy, 12kx2=mghh=kx22mg Substitute the given values, h=875 Nm23.0×10-2…

Q: 2) A 65.0 kg snowboarder starts from rest and descends a 12.0 m high hill. a) If her speed at the…

A: 2) a) As per the work-energy theorem, Here, E, K, U, m, v, u, h, g, and Wf represent the…

Q: The work W% accelerates a car from 1) 2 W 0 to 50 km/hr. How much work is 2) 3 W. needed to…

A: Given data:  Work done = W0 Initial velocity (V0) = 0 km/h Final velocity (V) = 50 km/h Required:…

Q: A 0.800-kg particle has a speed of 1.60 m/s at point A and kinetic energy of 7.30 J at point B. (a)…

A: (a).The kinetic energy at A is

Q: 8. Adult cheetahs, the fastest of the great cats, have a mass of about 70 kg and have been clocke…

A: To find: a)The amount of kinetic energy. b)The factor by which the kinetic energy will change if its…

Q: A 0.300-kg ball has a speed of 15.0 m/s. (a) What is its kinetic energy? (b) What If? If its speed…

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Q: •P49 You throw a ball straight up, and it reaches a height of 20 m above your hand before falling…

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Q: 3. a 0.35-kg fruit is falling from a tree with a speed of 5.0 m/s after t = 1.0 s. At t = 2.0 s, the…

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Q: A model drag car is being accelerated along its track from rest by a motor with a force of 75 N, but…

A: Applied force, F = 75 N , drag force, f =30 N, distance, s = 2 m

Q: A 21-kg child starts from rest and slides down a slide that is 3.9 m high. At the bottom of the…

A: From the theorem of work-kinetic energy, we have the net work done equal to the change that occurs…

Q: A model train powered by an electric motor accelerates from rest to 0.640 m/s in 22.0 ms. The total…

A: Given Information,Initial Velocity u=0Final Velocity v =0.64 m/stime(t) = 22 ms  = 22×10-3…

Q: A 30-kg sledder goes down a 6.0 m high snowy slope from rest, hitting 7.0 m/s as she reaches the…

A: Change in kinetic energy is the difference of final and initial kinetic energy. Kinetic energy is…

Q: 3. a 0.35-kg fruit is falling from a tree with a speed of 5.0 m/s after t = 1.0 s. At t = 2.0 s, the…

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Q: A lift to raise a crate to height of 10.0 m is used. [1hp= 746 W] Explain how much work in N m is…

A: The work done by a system is obtained by taking the scaler product of the force and…

Q: 3. a 0.35-kg fruit is falling from a tree with a speed of 5.0 m/s after t = 1.0 s. At t= 2.0 s, the…

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Q: A 3.25-kg crate starting at rest slides down a rough 7.00-m-long ramp, inclined at 27.5° below the…

A:

Q: 3. A skier of mass 66 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

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Q: You throw a 24.0 NN rock into the air from ground level and observe that, when it is 14.0 mm high,…

A: weight = 24 N mg = 24m = 24/9.8 m = 2.45 kg H = 14 m V = 16 m/sA)Using work energy theorem…

Q: A spring has a natural length of 28 cm. Suppose a 26 N force is required to keep it stretched to a…

A: Given value--- Natural length = 28 cm . Stretched length = 38 cm . Force = 26 N. We need to…

Q: An electric engine in a 2.0 kg remote-control toy car has a power output of 4.0 W. How fast will it…

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Q: A tadpole swims across a pond at 5.50 cm/s. The tail of the tadpole exerts a force of 28.0 mN to…

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Q: A 65.00-kg runner begins her exercise by moving with a velocity of 2.50 m/s. She then runs up a…

A: Kinetic energy is given by,  KE=12mv2 Potential energy is given by , PE=mgh Given : Mass m=65 kg…

Q: An engine uses 20000 N of force to power a car at an average speed of 5.0 m/s. What is the average…

A: POWER =FORCE×VELOCITY

Q: A 600 kg dragster accelerates from rest to a final speed of 120 m/s in 400 m (about a quarter of a…

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Q: Releasing some frustration at the end of the semester, you throw your physics book (mass of 2.7 kg)…

A: Given Mass of book ( m ) =2.7kg Height of building ( h ) = 25m Initial velocity ( u ) = 6m/s

Q: 7. a) Use your energy equations to determine what height will a 0.042 kg baseball rise if it is…

A: a) Use your energy equations to determine what height will a O.042 kgbaseball rise if it is tossed…

Q: A 0.32-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.4 J at point B. (a)…

A: Given: The mass of the particle is m=0.32 kg, The velocity of the particle at point A is vA=5.0…

Q: A 0.59-kg particle has a speed of 5.0 m/s at point A and kinetic energy of 8.5 J at point B. (a)…

A: Given Data:- The mass of the particle is m = 0.59 kg. The speed of the particle at point A is vA =…

Q: Question 9 Suppose the object starts from rest, the slide is frictionless and m = 3.50 kg. (Neglect…

A: (A) Apply the conservation of energy between points A and B. Since the object starts from rest, so…

Q: A 1250 kg sports car accelerates from zero to 30 m/s in 25 s. What is the average power delivered by…

A: Given : m = 1250 kg vo = 0 m/s v = 30 m/s t = 25 s

Q: C7 19.) You reach out the second story window, which is 5 m above the sidewalk, and throw a 0.5 kg…

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Q: How much power is required to raise a 30-kg crate a vertical distance of 6m in a time of 4 seconds?…

A: The potential energy of a body is given by PE = mgh, where m = the mass of the body g = acceleration…

Q: 11. (i) A small 75g toy rocket is launched straight up from the ground at 72 km/h (a) What is the…

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Q: Q7 A ball, of mass m = 1.0 kg slides on a rough path AB. If the ball starts from rest at point A and…

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Q: 5. A 1-kg rock is dropped from a height of 6.0 m. a. What is the mechanical energy of the rock? b.…

A: Given data: Mass of rock, m=1 kg Height, h=6 m

Q: A car travels with a constant speed of 15 m/s. The car's engine produces a 4000N pushing force in…

A: Given Data:- Speed of the Carr is v=15 m/s Force produced by the engine of the car is F=4000 N…

Q: A 61.0-kg athlete leaps straight up into the air from a trampoline with an initial speed of 9.7 m/s.…

A: