A 72.3 kg student runs up the stairs of a football stadium to a height of 11.1 m above the ground in 11.3 s. What is the power of the student in kW?

Q: A bag of wheat weight 2300 kg .To what height should it be raised so that potential energy is 7890J?…

A:

Q: 13) A person runs up a long flight of stairs in 10 seconds. If the person’s weight is 600 N and the…

A: Given values: Person's weight or force due to gravity,F=600 N Vertical height or displacement, s=20…

Q: How fast would an 80 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet…

A: Given data: Mass of the bullet is mb = 8 g = 0.008 kg Mass of the person is M = 80 kg Speed of the…

Q: A boy throws a ball of mass 0.25kg straight upward with an initial speed of 20m/s When the ball…

A:

Q: A 45 kg object is lifted to a height of 18 m. The Potential energy of the object is_ О а.7.938 k] O…

A: Given : m = 45 kg h = 18 m

Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: The rate  of doing work is called power.

Q: A man with 80.0 kg mass climbs a stairs with a height of 7.0 m within 15.0 seconds. What is his…

A: P=Et=mght

Q: A student weighing 400 N climbs a flight of stairs 2 m high in 6 s. What power in watts is required…

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Q: What is the kinetic energy of a 25 kg dog that is running at a speed of 8.7 m/s (about 19 mi/h)?

A: The formula for kinetic energy is given as follows:K=12mv2 K is the kinetic energy , m is the mass…

Q: A person weighing 197 N climbs a flight of stairs 6.4 m high in 5.0 s. What power is required to…

A: Given:     Force, F = 197 N      Displacement, d = 6.4 m       Time taken, t = 5 s To determine the…

Q: The mass of a bald eagle is 6.3 kg. If the eagle is flying at a speed of 33.5 meters/seconds, what…

A: The relation of the kinetic energy is given in terms of mass and velocity Ek=12mv2

Q: How much power will a 260 N student develop if he/she climbs a flight of stairs 12 m from the ground…

A:

Q: What is the kinetic energy of a 1400 kg car traveling at 5.3 m/s? A. 7.4 x 103 J B. 2.0 x 104 J…

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Q: It takes 157 kJ of work to accelerate a car from 23.4 m/s to 27.3 m/s. What is the car's mass?

A: Given, Work done, W=157 kJ Initial velocity, u=23.4 m/s Final velocity, v=27.3 m/s

Q: Suppose your mass is 83.5 kg and you climb 40 stairs of height 18 cm in 16.0 s. What is your power…

A: (given)                             Mass = 83.5 kg                           Total distance =…

Q: The gravitational potential energy of a 0.120 kg bird in a tree is 6.60 J. What is the height of the…

A: The expression for the gravitational potential energy is written as, Here, m, g and h represent the…

Q: How much work does it take to stop an 800 kg car traveling at 25m/s? If it takes 2 s to stop, what…

A: Given data:  Mass of car (m) = 800 kg Initial speed of car (Vi) = 25 m/s Time (t) = 2 s Required:…

Q: A 56.5-kg person is running and accelerates from 3.67 m/s to 8.29 m/s in 5.67 s. How much power does…

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Q: It takes 212 kJ of work to accelerate a car from 21.7 m/s to 29.2 m/s. What is the car's mass?

A:

Q: a 75.8 kg person runs up a flight of stairs having a rise of 5.3 m in a time of 4.5 s. What average…

A: Given data: Mass (m) = 75.8 kg Height (h) = 5.3 m Time (t) = 4.5 s Required: The average power (P)

Q: The mass of 1 cubic meter of fresh water at the top of a 100 m hydroelectric dam is 1,000 kg and it…

A: Given: The mass of the water is m=1000 kg. The height of the dam is h=100 m. The volume of water is…

Q: what is the speed of a 59.1kg women running with a kinetic energy of 2001 J?

A: The expression for kinetic energy of the object is, KE=12mv2v2=2KEmv=2KEm

Q: A 75 kg student runs up the stadium stairs for a distance of 15.00 m in 5.0 seconds. How much power…

A: mass = m = 75 kg height = h = 15 m time = t = 5 sec

Q: An 0.45 kg apple hangs from a tree and is about to fall to the ground. If the apple is 12 meters…

A: Given, mass, m=0.45 kgheight, h=12 macceleration due to gravity, g=-9.8 ms2Potential energy, U=?…

Q: What is the potential energy of an airplane that is only 0.5489 km off the ground and weighs 4120 kg

A: Given that, an airplane that is only 0.5489 km off the ground. That means  Distance, d = 0.5489 km…

Q: What is the speed of a car that has a mass of 985 kg and a kinetic energy of 56 000 J?

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Q: It takes 156 kJ of work to accelerate a car from 20.4 m/s to 28.2 m/s. What is the car's mass?

A: The mass of the car can be calculated in given steps:Given:

Q: If a 1000 kg car is exiting a highway through an above-the-ground ramp of 5.0 m radius at 12 m/s,…

A: The given values are, m=1000 kgr=5.0 mv=12 m/s

Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…

A: Given The mass of the man is m=95 kg. The height of the stairs is h=20 m. The time is taken by the…

Q: A cart is pulled at a constant speed along an inclined plane to the height of a seat top. If the…

A: Given data:  Mass (m) = 3.8 kg Height (h) = 0.53 m Required: The potential energy

Q: A skier with a mass of 88 kg hits a ramp of snow at 10.95 m/s and becomes airborne. At the highest…

A:

Q: What is the kinetic energy of a 30 kg dog that is running at a speed of 8.6 m/s (about 19 mi/h)?

A: The expression for the kinetic energy of the dog is, KE=12mv2 Here, m is the mass of the dog and v…

Q: What is your average power if you lift a 36.1 kg box at a constant speed to a height of 1.31 m in…

A: Calculate the work required for the to lift the mass. W = increase in potential energy of the mass…

Q: What is the potential energy in J of a bungee jumper standing on a 109 m bridge that weighs 85 kg?

A:

Q: What is the average power supplied by a 60 kg person running up a flight of stairs a vertical…

A: The person’s average power can be determined as, Here, W and t represent the work done and the…

Q: A man climbs onto a wall that is 6.16 m high and gains 1864.02 J of potential energy. What is the…

A: increase in potential energy is relative concept    increase in potential energy when object is…

Q: What is the kinetic energy of a 1066-kg car moving at 29.8 m/s (66.7 mi/h)? 473.33 MJ

A: The kinetic energy is given by the formula KE =12mv2where m is the mass andv is the velocity

Q: How much power is needed to accelerate a 1250 kg sports car from rest to 25 m/s in 4.5 seconds?

A:

Q: How much power does it take for a 60 kg person to run up stairs at a rate of 2.5 steps per second if…

A: Given data:  Mass (m) = 60 kg Time (t) = 1 s Number of steps rup up in 1 second = 2.5 Height of each…

Q: A chimp climbs on to a wall that is 3.6m high and gains 2 268 J of potential energy. What is the…

A:

Q: A 40 kg boy runs up a staircase to a floor 5 m higher in 7 s. What is his power output?

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Q: A rock weighs 700 g and has a potential energy of 1 500 J. What height is it found at?

A: The solution can be given as :-

Q: A 1.6 m tall man lifts 2.1 kg box from the ground to a height 2.2 m above the ground. What is the…

A:

Q: A weightlifter raises a 150-kg barbell from the floor to a height of 2.2 m in 0.80 s. What is his…

A:

Q: A 78 kg student runs up the stairs of a football stadium to a height of 12.5 m above the ground in…

A: Given : mass of the student, m=78 Kg height, h=12.5 m time taken to climb, t=15 s   Power : Power is…

Q: A student weighing 300 N climbs a flight of stairs 6m high in 4 s. What power is required to perform…

A: Here work is done against gravitational force F = mg = 300 N

Q: A toy robot powered by an electric motor accelerates from rest to 0.740 m/s in 20.0 ms. The total…

A: