A student, starting from rest,slides down a water slide. On the way down, a kinetic frictionalforce...

Question

Question

A student, starting from rest,slides down a water slide. On the way down, a kinetic frictionalforce...

A student, starting from rest,slides down a water slide. On the way down, a kinetic frictionalforce (a nonconservative force) acts on her. Thestudent has a mass of 69.0 kg, and the height of the water slide is11.3 m. If the kinetic frictional force does -5.60

10³ J of work, how fast is the student going atthe bottom of the slide?

science physics

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Potential energy at the top = U = mgh

Energy at the bottom = K = Friction energy

--

U = mgh = (69kg)(9.8)(11.3m) = 7641.06

--

K = -5.60x10^3

--

U - K = 7641.06 - 5.60x10^3 = 2042 J

--

Solve for v:

--

1/2mv^2 = 2042

v = 7.69 m/s

--

Hope this helps.

Add a comment

Answer 2

Similar Homework Help Questions

A student, starting from rest, slides down a water slide. On the way down, a kinetic...

A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 81 kg, and the height of the water slide is 11.7 m. If the kinetic frictional force does -6.7 × 103 J of work, how fast is the student going at the bottom of the slide?
A student, starting from rest, slides down a water slide. On the way down, a kinetic...

A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 81.0 kg, and the height of the water slide is 10.9 m. If the kinetic frictional force does -7.70 × 103 J of work, how fast is the student going at the bottom of the slide?
4. A student, starting from rest, slides down a water slide. On the way down, a...

4. A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force "A non-conservative force" acts on her. The student has a mass of 76 kg, and the height of the water slide is 15.0 m. If the kinetic frictional force does - 6.2 x 10 J of work, How fast is the student going at the bottom of the slide?

Starting from rest, a 90-kg firefighter slides down a fire pole. The average frictional force exerted...

Starting from rest, a 90-kg firefighter slides down a fire pole. The average frictional force exerted on him by the pole has a magnitude of 805 N, and his speed at the bottom of the pole is 3.1 m/s. How far did he slide down the pole?
Starting from rest, a 93-kg firefighter slides down a fire pole. The average frictional force everted...

Starting from rest, a 93-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 810 N, and his speed at the bottom of the pole is 3.6 m/s. How far did he slide down the pole?
Starting from rest at the top, a child slides down the water slide at a swimming...

Starting from rest at the top, a child slides down the water slide at a swimming pool and enters the water at a final speed of 4.65 m/s. At what final speed would the child enter the water if the water slide were twice as high? Ignore friction and resistance from the air and the water lubricating the slide.

A 40-kg child slides down a curved slide starting at the top with an initial speed...

A 40-kg child slides down a curved slide starting at the top with an initial speed of 4 m/s. (a) Suppose that the slide is frictionless. Determine the speed of the child when she is 3 m below her starting height. (b) Suppose that the slide has friction. Determine the speed of the child when she is 5 m below her starting height if she starts from rest and 300 J of thermal energy is dissipated during the motion.
A 29.00-kg child initially at rest slides down a playground slide from a height of 3.10...

A 29.00-kg child initially at rest slides down a playground slide from a height of 3.10 m above the bottom of the slide. If her speed at the bottom is 2.40 m/s, how much energy is lost due to friction?
Problem 4 A child on a sled slides (starting from rest) down an icy slope that...

Problem 4 A child on a sled slides (starting from rest) down an icy slope that makes an angle of 15 with the horizontal. After sliding 20 m down the slope, the child enters a flat, slushy region, where she slides for 2.0s with a constant negative acceleration of -1.5 m/s with respect to her direction of motion. She then slides up another icy slope that makes a 20 angle with the horizontal. (a) How fast was the child going...

Starting from rest at the top, a child slides down the water slide at a swimming...

Starting from rest at the top, a child slides down the water slide at a swimming pool and enters the water at a final speed of 4.48 m/s. At what final speed would the child enter the water if the water slide were twice as high? Ignore friction and resistance from the air and the water lubricating the slide. I tried doing what the previous answers had but I couldnt come up with the correct answer.

A student, starting from rest,slides down a water slide. On the way down, a kinetic frictionalforce...

Homework Answers

Add Answer to:
A student, starting from rest,slides down a water slide. On the way down, a kinetic frictionalforce...

Post as a guest

Earn Coins