40. A 1500 kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered by the engine? (1 hp = 746 W )  60 hp 70 hp 80 hp 90 hp

Q: If a 0.50 kg ball is moving at a speed of 12 m/s what is the kinetic energy of the ball? Equation is…

A:

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…

A: Energy = Power * time P=power = 4 W time=t=5 s   Energy=E= 4*5=20   mass=m=2.0 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: P=Wt=Fdt=Fv

Q: Each second, 1200 m3 of water passes over a waterfall 100 m high.Three-fourths of the kinetic energy…

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Q: A retired teacher lifts his books weighing 2500 g by a height of 100 cm in 0.03s. How much power…

A: Given data: Mass (m) = 2500 g = 2.500 kg Height (h) = 100 cm = 1.00 m Time (t) = 0.03 s Required:…

Q: A 950 kg car accelerates from rest with a constant power of 145 hp. Neglecting air resistance, what…

A: Mass of the car=950kgPower =145hp=108126W (1hp=745.7W)Energy gained in…

Q: 22. What is the work required to raise a 350 kg steel beam to a height of 7.50 m? Group of answer…

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Q: When doing a chin-up, a physics student lift their 42 kg body by a distance of 0.25 meters from the…

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Q: If a 1.5 kg chicken is running with a speed of 10.0 m/s, its kinetic energy is:   Question 19…

A: Given data:  Mass (m) = 1.5 kg Speed (v) = 10.0 m/s Required: Kinetic energy

Q: 11. Jam consumes 8.4 x 10^6 J of energy per day while maintaining a constant weight. What is the…

A: Given:- Jam consumes 8.4 x 106 J of energy per day while maintaining a constant weight Find:- What…

Q: A warehouse worker uses a forklift to raise a crate of pickles on a platform to a height 2.75 m…

A: Write the given data. m=207 kgh=2.75 mP=1440 W

Q: 12. A mass of 1 kg. was released from a 1,000 meter height. What is its Kinetic Energy at the middle…

A: Given that- M=1kg Heigh(h)=1000m    To determine that- What is it kinitic energy at the middle of it…

Q: How long will it take a 844-kg car with a useful power output of 48.5 hp (1 hp equals 746 W) to…

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Q: A 1.000 ´ 103 kg car is moving at 90.0 km/h (25.0 m/s) as it exits a freeway. The driver brakes to…

A: mass = 1000 kg initial speed = 25 m/s final speed = 10 m/s   Yes, the work was done by the car…

Q: A model train powered by an electric motor accelerates from rest to 0.600 m/s in 26.0 ms. The total…

A: The initial velocity of the train v=0 m/s The final velocity of the train v=0.600 m/s The time taken…

Q: How much power is needed to lift a 75-kg student vertically upward at a constant speed of 0.33 m/s?…

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Q: Is the answer I choose the correct one?

A: GivenWeight of the car W = 8000 NInitial velocity u = 12 m/sFinal velocity v = 0 m/sTime taken t =…

Q: An airplane of mass 4500 kg is cruising at a speed of 49.0 m/s at an altitude of 175 m. What is its…

A: Given data: Mass of the airplane, m=4500 kg Speed of the airplane, v=49.0 m/s Altitude of the…

Q: A person standing at the top of a 7.0 m tall building throws a basketball (m = 0.625 kg) with…

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Q: A 10.0 kg crate slides across the floor 13 m against a force of friction of 7.5 N.  The thermal…

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Q: Q14) A 55-kg athlete climbs an 8 m long rope in 10 s. His average power output (in W) is A) 431 B)…

A: Mass of athelete = 55 kg  Vertical distance = 8 m  Time = 10 second

Q: 3. A projectile of mass 2.00 kg is propelled from ground level with kinetic energy 450 J. At the…

A: Write the given values with the suitable variables. m=2 kgK1=450 JK2=250 Jg=10 m/s2 Here, m, K1, K2,…

Q: An object with a mass of 500 g is released from a helight of 40 m. Since the air friction is…

A: (3) Write the mass of the object. m=500 kg   Write the initial height of the object. h=40 m

Q: 47. A 1500 kg car accelerates from rest to 75 km/h in 45s. How much power is supplied by the engine…

A: Given data: Mass of the car, m=1500 kg Since car starts from rest, we can take initial velocity,…

Q: A 2000 kg car with a 250 HP (1.865 X 105 W) engine accelerates from rest. If all the engine’s power…

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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…

A:

Q: A grade 12 student lifts their 55 kg body 125 cm off the ground with one arm in 5 seconds. How much…

A:

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: 2000 pound truck is driving at a constant velocity of 35 miles/h. How much power (in hp) is needed…

A:

Q: I need help with these questions

A: 1) mechanical energy is always conserved with certain conditions. Mechanical energy is combination…

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…

A: Mass of engine = 2 kg  Power output = 4 W  Time = 5 seconds

Q: 4. A van travels at a speed of 40.0 km/h with a kinetic energy of 7 600 J. What is the van's mass?…

A: In the given question we have to solve the  questions 4, 5 and 6.

Q: 12. A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the…

A: Given data The time taken by the person is t = 10 s. The person weight is W = 600 N. The vertical…

Q: A 2000 kg car with a 250 HP (1.865 X 105 W) engine accelerates from rest. If all the engine’s power…

A:

Q: 1)

A: Answer

Q: The kinetic energy of a motorcycle and rider is 59,600 J. If their total mass is 286 kg, what is…

A: The kinetic energy of an object of mass 'm' and moving with a speed v is given as:K.E=12mv2 It is…

Q: 1. A car travels at a speed of 60.0 km/h and has a mass of 1 005 kg. What is its kinetic energy? 60…

A: Speed of the car is V = 16.67 m/s  Mass of the car is M = 1005 kg

Q: A 1000.0 kg car is moving at 15 kmvh. If a 2000 0 kg truck has 61 times the kinetic energy of the…

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Q: Calculate the ratio of the mechanical energy at B and mechanical energy at A (EB/EA) and (EC/EB).…

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Q: If the speed of an object is tripled and the mass is halved, by what factor does the kinetic energy…

A: The initial kinetic energy of an object is given as, K1=12mv2 Here, m denotes the mass and v denotes…

Q: 5. Calculate the kinetic energy of a 4.0 g bullet moving at 1000 m/s. A 1000 J B 2000 J 3000 J D…

A: A particle of mass m moving with velocity v,  The kinetic energy of the particle is (K.E)=(1/2)*m*v2

Q: The Burj Khalifa in Dubai is the world's tallest building. The structure is 828 m828 m (2716.5 ft)…

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Q: A system in which only one particle can move has the potential energy shown in . Suppose U1 = 16 J.5…

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Q: A 8000-N car is traveling at 14 m/s along a horizontal road when the brakes are applied. The car…

A: Ans. (d) 80 J   kinetic energy =12mv2given,weight, w = 8000 Nacceleration due to gravity, g =9.8…

Q: A 80-kg man runs at a constant velocity of 3 m/s. What is his kinetic energy? 880 J 420 J 360 J 240…

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Q: A 1500 kg sports car accelerates from rest to 95 km/h in 7.0 s What is the average power delivered…

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Q: A 65-kg woman runs up a flight of stairs in 10.0 s. Her net upward displacement is 3.0 m.…

A: