HomeworkLib
Question

A 60.6-kg skateboarder starts out with a speed of 2.25 m/s. He does 106 J of...

A 60.6-kg skateboarder starts out with a speed of 2.25 m/s. He does 106 J of work on himself by pushing with his feet against the ground. In addition, friction does -239 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 8.56 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give the absolute value.

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:
A 60.6-kg skateboarder starts out with a speed of 2.25 m/s. He does 106 J of...
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

  • A 61.2-kg skateboarder starts out with a speed of 2.26 m/s. He does 107 J of...

    A 61.2-kg skateboarder starts out with a speed of 2.26 m/s. He does 107 J of work on himself by pushing with his feet against the ground. In addition, friction does -258 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 5.65 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give...

  • A 60.7-kg skateboarder starts out with a speed of 2.41 m/s. He does 99.2 J of...

    A 60.7-kg skateboarder starts out with a speed of 2.41 m/s. He does 99.2 J of work on himself by pushing with his feet against the ground. In addition, friction does -212 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 8.11 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give...

  • A 54.6-kg skateboarder starts out with a speed of 1.65 m/s. He does 118 J of...

    A 54.6-kg skateboarder starts out with a speed of 1.65 m/s. He does 118 J of work on himself by pushing with his feet against the ground. In addition, friction does -269 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 7.00 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give...

  • A 60.0-kg skateboarder starts out with a speed of 2.18 m/s. He does 104 J of...

    A 60.0-kg skateboarder starts out with a speed of 2.18 m/s. He does 104 J of work on himself by pushing with his feet against the ground. In addition, friction does -215 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 6.70 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give...

  • A 52.1-kg skateboarder starts out with a speed of 1.71 m/s. He does 93.1 J of...

    A 52.1-kg skateboarder starts out with a speed of 1.71 m/s. He does 93.1 J of work on himself by pushing with his feet against the ground. In addition, friction does -213 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 7.39 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give...

  • A 54.9-kg skateboarder starts out with a speed of 1.81 m/s. He does 104 J of...

    A 54.9-kg skateboarder starts out with a speed of 1.81 m/s. He does 104 J of work on himself by pushing with his feet against the ground. In addition, friction does -273 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 6.04 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give...

  • 54.0-kg skateboarder starts out with a speed of 2.38 m/s. He does 105 J of work...

    54.0-kg skateboarder starts out with a speed of 2.38 m/s. He does 105 J of work on himself by pushing with his feet against the ground. In addition, friction does -230 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 8.53 m/s. (a) Calculate the change (PEf - PE0) in the gravitational potential energy. (b) How much has the vertical height of the skater changed? Give the...

  • A 57.4-kg skateboarder starts out with a speed of 2.20 m/s. He does 113 J of...

    A 57.4-kg skateboarder starts out with a speed of 2.20 m/s. He does 113 J of work on himself by pushing with his feet against the ground. In addition, friction does -224 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 8.70 m/s. Calculate the change (PEf - PE0) in the gravitational potential energy.

  • A skateboarder starts up a 1.0-m-high, 30∘ ramp at a speed of 8.6 m/s . The...

    A skateboarder starts up a 1.0-m-high, 30∘ ramp at a speed of 8.6 m/s . The skateboard wheels roll without friction. At the top, she leaves the ramp and sails through the air. Part A How far from the end of the ramp does the skateboarder touch down? Express your answer to two significant figures and include the appropriate units.

  • A skateboarder starts up a 1.0-m-high, 30° ramp at a speed of 7.7 m/s. The skateboard...

    A skateboarder starts up a 1.0-m-high, 30° ramp at a speed of 7.7 m/s. The skateboard wheels roll without friction. At the top, she leaves the ramp and sails through the air. How far from the end of the ramp does the skateboarder touch down? Express your answer to two significant figures and include the appropriate units | Value Units に

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