Question

A skater encounters a 7m long ramp with a 20º upward incline. The mass of the...

A skater encounters a 7m long ramp with a 20º upward incline. The mass of the skater (including skateboard) is 50kg. The coefficient of rolling friction between the skateboard wheels and the ramp is 0.025.

-What is the thermal energy generated between the wheels and the ramp as the skater moves to the top of the ramp?

- At what speed must the skater start up the ramp to reach the top still moving at 3.5 m/s? You must solve this problem with conservation of energy.

-What is the mechanical energy of the skater at the start of the ramp?

-What percentage of the skater’s mechanical energy is “lost” to friction?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
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
Similar Questions
A constant horizontal force moves a 48 kg trunk 5.0 m along a 25 ° incline...
A constant horizontal force moves a 48 kg trunk 5.0 m along a 25 ° incline upward at constant speed. The coefficient of kinetic friction between the trunk and the incline is 0.23. What are (a) the work done by the applied force and (b) the increase in the thermal energy of the trunk and incline?
A wood block of Mass M=3.00 kg and rests horizontally at the bottom of a ramp....
A wood block of Mass M=3.00 kg and rests horizontally at the bottom of a ramp. A bullet of mass m=0.0420kg with an intial velocity v0 is fired at the wood block and embedded inside the block. The wood blocl and the embedded bullet together move up the ramp and reach a vertical heigh of yf= 2.40m relative to the bottom of the rmap(yo=0) before sliding downward. Ignore friction/air resistance. a) What is the total mechanical energy of the block+bullets...
A box is on an inclined which has angle θ=30 degrees with horizon. There is a...
A box is on an inclined which has angle θ=30 degrees with horizon. There is a box with mass M=5 kg on the inclined. The coefficient of friction between the box and the surface of inclined is μ=0.2 . a) If the box is kicked to move up the inclined and start moving up with velocity V=15 m/s moving upward, how far d=? does It move along the surface of inclined? b) How much energy Q=? is lost while the...
3-A 1.0 kg block slides down an inclined plane of 39 0  from the horizontal. If the...
3-A 1.0 kg block slides down an inclined plane of 39 0  from the horizontal. If the block  starts from rest and hits the bottom in 5.1 s, what is the speed of the block, in the unit m/s, at the bottom of the incline? Assume a frictionless plane. 4-A bus negotiates a turn of radius 103 m while traveling at a speed of 92 km/h. If slipping just begins at this speed, what is the coefficient of static friction between the...
The hill is covered in gravel so that the truck's wheels will slide up the hill...
The hill is covered in gravel so that the truck's wheels will slide up the hill instead of rolling up the hill. The coefficient of kinetic friction between the tires and the gravel is ?k. This design has a spring at the top of the ramp that will help to stop the trucks. This spring is located at height h. The spring will compress until the truck stops, and then a latch will keep the spring from decompressing (stretching back...
Two boxes are stacked, with box B placed on top of box A. If box A...
Two boxes are stacked, with box B placed on top of box A. If box A is pushed such that both boxes move with a decreasing speed, is there any friction on either box? (a) Kinetic friction on box A and no friction on box B (b) Kinetic friction on box A and static friction on box B (c) Kinetic friction on box A and kinetic friction on box B (d) Static friction on box A and kinetic friction on...
do all five questions Question 1 20 pts Ignoring the effects of air resistance, if a...
do all five questions Question 1 20 pts Ignoring the effects of air resistance, if a ball falls freely toward the ground, its total mechanical energy Group of answer choices increases remains the same not enough information decreases Flag this Question Question 2 20 pts A child jumps off a wall from an initial height of 16.4 m and lands on a trampoline. Before the child springs back up into the air the trampoline compresses 1.8 meters. The spring constant...
ch 6 1: It is generally a good idea to gain an understanding of the "size"...
ch 6 1: It is generally a good idea to gain an understanding of the "size" of units. Consider the objects and calculate the kinetic energy of each one. A ladybug weighing 37.3 mg flies by your head at 3.83 km/h . ×10 J A 7.15 kg bowling ball slides (not rolls) down an alley at 17.5 km/h . J A car weighing 1260 kg moves at a speed of 49.5 km/h. 5: The graph shows the ?-directed force ??...
8 through 10 done please!! 3.13.6 Question 110 pts A 319 kg motorcycle is parked in...
8 through 10 done please!! 3.13.6 Question 110 pts A 319 kg motorcycle is parked in a parking garage. If the car has 35,494 J of potential energy, how many meters above ground is the car? Report your answer to 1 decimal place. Please do not include units or the answer will be marked incorrect. Flag this Question Question 210 pts A box sitting on the top of a hill has 252 J of potential energy. If the hill is...
just do questions 5 through 10 3.13.6 Question 110 pts A 319 kg motorcycle is parked...
just do questions 5 through 10 3.13.6 Question 110 pts A 319 kg motorcycle is parked in a parking garage. If the car has 35,494 J of potential energy, how many meters above ground is the car? Report your answer to 1 decimal place. Please do not include units or the answer will be marked incorrect. Flag this Question Question 210 pts A box sitting on the top of a hill has 252 J of potential energy. If the hill...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT