You are an athlete who masses 80 kg. When doing a pushup you lift a total of about 56 kg a distance of 0.6 meters. If a pushup takes 0.5 seconds, how much power do you generate? If you do 50 pushups, how long will that keep a 100 W light bulb on?

Q: A man pushes a lawn mower on a level lawn with a force of 213 N. If 53% of this force is directed…

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Q: Samantha pushes a 4.1 kg crate up a ramp 3.5 * 10² m in length and inclined at 9.8° with the…

A: The situation of the crate on the inclined plane is shown below.

Q: A man pushes a lawn mower on a level lawn with a force of 201 N. If 44% of this force is directed…

A: Given Data: The force with which the man pushes the lawn mover is given as f = 201N. The percentage…

Q: A 67 kg yak has an average power output of 200 W. How long can a yak climb a 3km high mountain?…

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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: Energy = Power * time P=power = 4 W time=t=5 s   Energy=E= 4*5=20   mass=m=2.0 kg

Q: Q16. A giri weighing 45 kg jumps to a height of (1/2) m at the rate 10 times per minute. The power…

A: Data provided :  Mass (m) = 45 kg Height (H) = 0.5 m The Rate = 10 times per minute

Q: Your job is to lift 30-kg crates a vertical distance of 0.90 m from the ground onto the bed of a…

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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: compact car can climb a hill in 10 s, the top of the hill is 30 m higher than the bottom, and the…

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Q: A man pushes a lawn mower on a level lawn with a force of 200 N. If 31% of this force is directed…

A: Given: The force F = 200 N. The power P = 63 W. The distance d = 4.7 m.

Q: The car weighing 1.0 × 10³ kg has an engine with a power of 80 kW. What is the biggest acceleration…

A:

Q: How much kinetic energy does a 5.0 kg object have when it is moving at 3.0 m/s? By what factor does…

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Q: A 60 kg woman whose average power is 30 W can climb a mountain 2.0 km high in

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Q: Ruth is moving a heavy box a distance of 14 m across the floor of her bedroom. If she does 9000 J of…

A: total distance moved = 14 m work done = 9000 J time taken = 3 seconds

Q: A 70 kg person runs up a staircase 3.0 m high in 3.5 s.  How much horsepower does he develop in…

A:

Q: If a 75 kg runner can accelerate from standing start to a speed of 10 m/s in 3 seconds, how much…

A: Since the runner starts from a standing position, the initial velocity of the runner is u=0 m/s.…

Q: While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body…

A: Write the expression for power, and simplify for the given situation

Q: How much power is needed to lift a 12.5 kg sack of rice from the ground to a height of 1.5 m within…

A: According to guidelines we need to solve only first question kindly repost other questions in the…

Q: If a ski lift raises 100 passengers averaging 660 N in weight to a height of 150 m in 60.0 s, at…

A: Given information: Here, mg is the average weight of the passenger, h is the height attained by the…

Q: While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body…

A:

Q: A girl weighing 400 N takes 3 seconds to run up a 4-m high stairs. Which of the following gives the…

A:

Q: An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height…

A: Given data :- Power P = 10 kW = 10 × 1000 W = 10000 W mass m = 200 kg height h = 40 m g = 10 ms-2

Q: A 2 500-kg car is moving at 2.30 m/s. How fast must a 1.5-kg toy car be moving so that the two have…

A: Given Mass of the car m = 2500 kg Speed of the car v = 2.30 m/s Mass of the toy car mt = 1.50 kg

Q: How far must you stretch a spring with k = 1000 N/m to store 200 J of energy?

A: It is given that,

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: What is the average power must produce to accelerate car with 1500 kg from rest to the speed 30…

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Q: if you pull a wagon with a force of 200 Newton's and it takes you 20 seconds to pull it 10 meters of…

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Q: In a "pop fly a 1.5 x 10^2 g baseball is projected vertically upward with an initial kinetic energy…

A:

Q: A bird of mass m = 2kg flies at a height h = 10 m from the ground with a constant horizontal speed v…

A: The mass of the bird, m=2 kg   The height, h=10 m   The horizontal speed, v=10 m/s

Q: A car travelling at a speed of 60 km/h has a kinetic energy of 200 kJ. If the speed of the car is…

A: Given data The initial velocity of the car is given as u = 60 km/h. The initial kinetic energy of…

Q: A warehouse worker uses a forklift to lift a crate of pickles on a platform to a height 3.75 m above…

A:

Q: A 100 kg weightlifter performs a lift called a clean and jerk, raising a 190 kg bar from the ground…

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Q: At the tallest drop in the rollercoaster, the cart has 500 J of potential energy and 0 of kinetic…

A: Required : Total mechanical energy at the end of the rollercoaster.

Q: Which has more kinetic energy, a 0.0020-kg bullet traveling at 400 m/s or a (6.4 x 107 )-kg ocean…

A:

Q: You're riding a toboggan down an icy run to a frozen lake, and you accelerate the 80.0-kg…

A: Given : m=80kg u=1m/s v=2m/s t=2s

Q: A bowler accelerates a 8.5 kg bowling pin from rest to 15 m/s. If this motion takes 1.75 s, what is…

A:

Q: At what speed does a 1000 kg compact car have the same kinetic energy as a 20,000 kg truck going 25…

A: Given: The mass of car is 1000 kg. The mass of truck is 20000 kg. The speed of car is 25 km/h.

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: A spring has a natural length of 40 cm. If a 60-N force is required to keep the spring compressed 10…

A:

Q: How fast would a(n) 73 kg man need to run in order to have the same kinetic energy as an 8.0 g…

A: Given data The mass of the man is, m1 = 73 kg. The mass of the bullet is m2 = 8 g. The velocity of…

Q: A motor has a power output of 1000 W.  How fast would this motor lift a 20 kg mass to a height of 10…

A: Motor would lift 20kg to height of 10m in 1.96 seconds

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 5.0 kg object is moving at 2.29 m/s? By what factor does its kinetic energy change if its speed…

A:

Q: A 1000 kg car whose speed is 80 km/h (22.2 m/s) has how much kinetic energy?

A: Given data:  Mass (m) = 1000 kg Speed (v) = 22.2 m/s Required: The kinetic energy (KE)

Q: Samantha pushes a 9.6 kg crate up a ramp 7.3 * 104 m in length and inclined at 2.1° with the…

A:

Q: What is the power demonstrated by a weightlifter when lifting a 420 kg barbell 1.4 meters in 0.65…

A:

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: *A 3-kg box falls from a height of 4 m. Just before hitting the ground, what will be it's kinetic…

A: Given Data: m = 3 kg g = 10 m/sec2 h = 4m   Formula Used: Kinetic energy at bottom = potential…