1. A 75kg athlete runs up a hill that is 55.Om high. How much work is...

Question

Question

science physics

Answer 1

Answer #1

is in the form of potential Energy Soli- given ma 75 kg h = 55 m Here Work W = mgh work - 75 x 9.8 x 55 J 2 40,425 work time

Answer 2

Similar Homework Help Questions

A runner is training for a race by running up a hill. The 80kg racer runs...

A runner is training for a race by running up a hill. The 80kg racer runs a 40m path to reach a height of 5m above where they started (see diagram below). Their legs put in a consistent force of 320N for the entire distance a) How much potential energy did the runner gain? (2 marks) b) How much energy was put into the system (2 marks) c) If the run took 14 seconds, what is the power rating of...
A runner is training for a race by running up a hill. The 85kg racer runs...

A runner is training for a race by running up a hill. The 85kg racer runs a 40m path to reach a height of 5m above where they started (see diagram below). Their legs put in a consistent force of 320N for the entire distance a) How much potential energy did the runner gain? (2 marks) b) How much energy was put into the system (2 marks) c) If the run took 15 seconds, what is the power rating of...
A bear of mass 218 kg runs up a hill. At the top of the hill,...

A bear of mass 218 kg runs up a hill. At the top of the hill, she donr 23.5 kj of work. How high is the hill?

a) How high a hill can a car coast up (engine disengaged) if friction is negligible...

a) How high a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 78.0 km/h? m (b) If, in actuality, a 750 kg car with an initial speed of 78.0 km/h is observed to coast up a hill to a height 10.0 m above its starting point, how much thermal energy was generated by friction? J (c) What is the average force of friction if the hill has a slope 2.5° above...
a 100kg person runs up the steps of a 100m stadium. How much work was done?...

a 100kg person runs up the steps of a 100m stadium. How much work was done? How would I work through this problem?
a boy weighing 350N runs up a flight of stairs consisting of 20 steps each 10cm high in 10 seconds

a boy weighing 350N runs up a flight of stairs consisting of 20 steps each 10cm high in 10 seconds. What is his power? show your workings

A person lives on the third floor of a building and he runs up the stairs...

A person lives on the third floor of a building and he runs up the stairs three times a day. Each floor has 24 steps and height of each step is 15 cm. a) If the person weight is 65 kg calculate how much energy he uses each day. b) If he runs from first floor to the third floor in 20 seconds, calculate the person power output
How much work is required for a 250kg car to accelerate from 25m/s to 45m/s in...

How much work is required for a 250kg car to accelerate from 25m/s to 45m/s in 30 seconds? What is the power output of the car?
As part of her morning jog, a 65-kg woman runs up a flight of steps with...

As part of her morning jog, a 65-kg woman runs up a flight of steps with a vertical height of 10 meters. She accomplishes this task in 15.0 seconds. a) What is the weight of the woman? b) How much work did the woman use to climb the stairs? c) What is her increase in potential energy? d) How much power did she use to climb the stairs? e) How much horsepower did she use?

a 60 kg marathon runner runs up the stairs to the top of Chicago’s 443m tall...

a 60 kg marathon runner runs up the stairs to the top of Chicago’s 443m tall Willis Tower. to lift the top in 15 minutes, what must be her average power output? how many such girls can match the power of an average horse?