HomeworkLib
Question

Using energy considerations, calculate the average force a 60.1-kg sprinter exerts backward on the track to...

Using energy considerations, calculate the average force a 60.1-kg sprinter exerts backward on the track to accelerate from 2.57 m/s to 8.57 m/s in a distance of 21.2 m, if they encounter a headwind that exerts an average force of 31.2 N against him.
science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
Using energy considerations, calculate the average force a 60.1-kg sprinter exerts backward on the track to...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 15. Using energy considerations, calculate the average force a 60.0-kg sprinter exerts backward on the track...

    15. Using energy considerations, calculate the average force a 60.0-kg sprinter exerts backward on the track to accelerate from 2.00 to 8.00 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him.

  • A 0.0850-kg arrow is fired horizontally. If the bowstring exerts an average force of 89.0 N...

    A 0.0850-kg arrow is fired horizontally. If the bowstring exerts an average force of 89.0 N on the arrow over a distance of 0.782 m, with what speed does the arrow leave the bow?

  • A freight train consists of two kg 1000.8 4 − × engines and 45 cars with...

    A freight train consists of two kg 1000.8 4 − × engines and 45 cars with average masses of kg 1050.5 4 × . (a) What force must each engine exert backward on the track to accelerate the train at a rate of 2 –2 m/s 10.005 × if the force of friction is N 1050.7 5× , assuming the engines exert identical forces? This is not a large frictional force for such a massive system. Rolling friction for trains...

  • A javelin thrower exerts a horizontal force of 300 N on a 3 kg javelin during...

    A javelin thrower exerts a horizontal force of 300 N on a 3 kg javelin during the execution of a throw (assume vertical force is equal to 0 N). Over the course of the throw, his hand and the javelin move through a horizontal displacement of 2.0 m. If the javelin’s initial horizontal velocity is equal to 0 m/s, how would the gravitational potential energy change over the course of the throw? a. Gravitational potential energy will increase b. Gravitational...

  • A 2 000-kg pile driver is used to drive a steel I-beam into the ground. The...

    A 2 000-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 4.80 m before coming into contact with the top of the beam, and it drives the beam 15.0 cm farther into the ground before coming to rest. Using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest. magnitude N

  • Physics Assignment Questions 1. A 180 kg car drags a 500 kg sled. The car exerts...

    Physics Assignment Questions 1. A 180 kg car drags a 500 kg sled. The car exerts a horizontal force of 4010 N against the ground in order to accelerate. The kinetic coefficient of friction for the sled is 0.285. a) What force does the car exert on the sled? b) What is the acceleration of the car and sled? 2. Calculate the acceleration of a skier heading down a 12.3° slope, assuming the coefficient of friction for waxed wood on...

  • A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the f...

    A horizontal force of 80 N acts on a mass of 6 kg resting on a horizontal surface, as shown in Figure 5. The mass is initially at rest and covers a distance of 5 m in 0.92 s under the action of the force. Assuming there are no energy losses due to air resistance and therefore that the acceleration is constant (a) (b) (c) (d) Calculate the total energy expended in the acceleration. Plot a graph of the kinetic...

  • Assignment 9 If you run around a half-mile track twice in 20 minutes a. What is...

    Assignment 9 If you run around a half-mile track twice in 20 minutes a. What is the total distance traveled? b. What is the speed in mi/hr (show work)? c. What is the total displacement? d. What is the velocity in mi/hr? You travel east 2 miles and then turn to the north and walk another 3 miles. What is your displacement (show work, make sure to show the direction as well)? You travel 6 miles at 40 degrees. How...

  • A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N...

    A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N of kinetic fiction between the crate and the floor is 0.100. If a total of 80.5 1 of work the crate, how far was it moved along the floor? done 21. Find the magnitude of the force ating on a 3.0-kg (assume all units in MKSo-ms cated at -2.0 m inside a potential 22. Which one of the following statements is false? More power...

  • Consider a father pushing a child on a playground merry-go-round. The system has a moment of...

    Consider a father pushing a child on a playground merry-go-round. The system has a moment of inertia of 84.4 kg · m2. The father exerts a force on the merry-go-round perpendicular to its 1.50 m radius to achieve a torque of 375 N · m. (a) Calculate the rotational kinetic energy (in J) in the merry-go-round plus child when they have an angular velocity of 10.0 rpm. ___J (b) Using energy considerations, find the number of revolutions the father will...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT