A water slide is connected so that a swimmer, starting from rest at the top of the slide, leaves the end of the slide travelling horizontally. one person hits the water 6m from the end of the slide in a time 0.4 seconds after leaving the slide. ignoring friction and air resistance, find the height H. b) how does the answer change if the swimmer leves the end at an angle of 10 degrees above the horizontal?

A water slide is connected so that a swimmer, starting from rest at the top of the slide, leaves the end of the slide travelling horizontally. one person hits the water 6m from the end of the slide in a time 0.4 seconds after leaving the slide. ignoring friction and air resistance, find the height H. b) how does the answer change if the swimmer leves the end at an angle of 10 degrees above the horizontal?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter9: Energy In Nonisolated Systems

Section: Chapter Questions

Problem 55PQ: Return to Example 9.9 and use the result to find the tension in the rope. Example 9.9 Snow Tubing At...

See similar textbooks

Similar questions

Return to Example 9.9 and use the result to find the tension in the rope. Example 9.9 Snow Tubing At a winter recreation resort, snow tubers at the bottom of the hill hook their tubes to a tow rope. A motor pulls the rope so that tubers move at constant velocity to the top of the hill. (Ignore the momentary acceleration of the tuber when he first attaches his tube to the rope.) The coefficient of kinetic friction between the tube and the snow is k = 0.16. A boy and his tube with a total weight of 415 N are pulled a distance of 255 m up the 18 incline (Fig. 9.29). Consider the Earth, the boy, his tube, and the snow along his path to make up the system. Find the energy transferred from the motor to the system via the work done by the rope. FIGURE 9.29
Starting from rest, a rectangular toy block with mass 300 g slides in 1.30 s all the way across a table 1.20 m in length that Zak has tilted at an angle of 42.0 to the horizontal. a. What is the magnitude of the acceleration of the toy block? b. What is the coefficient of kinetic friction between the block and the table? c. What are the magnitude and direction of the friction force acting on the block? d. What is the speed of the block when it is at the end of the table, having slid a distance of 1.20 m?
A baseball is thrown from the roof of h = 21.8-m-tall building with an initial velocity of magnitude 14.0 m/s and directed at an angle of 53.1 above the horizontal. a) What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air resistance. b) What is the answer for part (A) if the initial velocity is at an angle of 53.1 below the horizontal? c) If the effects of air resistance are included, will part (A) or (B) give the higher speed?
A 70 ?? skier starts to slide from ? = 25 ? above the jumping ramp as shown in the figure and jumps off the ramp at an angle of ? = 30°. If the ramp is frictionless and the effect of air resistance is neglected, (a) What is the maximum height ℎ that the skier can reach after jumping off the ramp? (b)If the skier had increased his weight by putting on a backpack, would the height ℎ be higher, lower, or remain the same? Explain. (c) If there was air resistance, would the height ℎ be higher, lower, or remain the same? Explain. (d) What would ℎ be if the length of the path above the jump point of the ramp (i.e., the part of the path above the dashed line according to the figure) were ? = 50 ? and the coefficient of the kinetic friction ?? = 0.2?
A landscape architect is planning an artificial waterfall in a city park. Water flowing at 0.562 m/s will leave the end of a horizontal channel at the top of a vertical wall h = 2.25 m (a) How far from the wall will the water land? find m Will the space behind the waterfall be wide enough for a pedestrian walkway? (Assume the water must land 2 m from the wall to provide adequate space for a person to walk beneath the waterfall.) Yes or No ? (b) To sell her plan to the city council, the architect wants to build a model to standard scale, one-seventeenth actual size. How fast should the water flow in the channel in the model? Find m/s Please show me how you got the answer, thank you :)
A skier goes down a 200 m slope. (a) If his altitude changes by 80 m during the run, what is his speed at the bottom if there is no friction? (b) If the skier’s mass is 70 kg and his final speed is actually 15 m/s, find the average force exerted by friction. (You don’t need to know the detailed shape or angle of the slope.
A 64 kg skier starts from rest at height H = 27 m above the end of a ski-jump ramp (see the figure). As the skier leaves the ramp, his velocity makes an angle of θ = 23° with the horizontal. Neglect the effects of air resistance and assume the ramp is frictionless. (a) What is the maximum height h of his jump above the end of the ramp? (b) If he increased his weight by putting on a 10 kg backpack, what would h be?
A skier with a mass of 70 starts to slide from = 25 ? above the jumping ramp as shown in the figure and jumps off the ramp at an angle of ? = 30 °. If we consider the ramp to be frictionless and neglect the air resistance effects, (a) What is the maximum height ℎ the skier can reach after jumping off the ramp? (b) If the skier had increased his weight by taking a bag on his back, would the ℎ height be higher, less or remain the same? Explain. (c) If there were air resistance, would the height of ℎ increase, decrease or remain the same? Please explain. (d) Calculate what would be ℎ if the length of the path above the jump point of the ramp (that is, the part above the dashed line according to the figure) were d = 50 ? and the kinetic coefficient of friction ?? = 0.2.
A bowling ball is dropped from the top of a building that has a height of h = 112 m. Part (a) Assuming air resistance is negligible, what is the ball's speed, vf in m/s, when it strikes the ground?Part (b) If drag produces an opposing force of 10 N while the ball's falling, what is the ball's speed, vf in m/s, when it strikes the ground? Assume the ball has a mass of 5 kg.Part (c) A different ball was dropped and the final speed was measured to be vf = 8.5 m/s while the drag force was measured to be 50 Newtons. What is the mass of this ball in kg?
A skier with a mass of 70 starts to slide from = 25 m above the jumping ramp as shown in the figure and jumps off the ramp at an angle of theta = 30 °. If we consider the ramp to be frictionless and neglect the air resistance effects, (a) What is the maximum height h the skier can reach after jumping off the ramp? (b) If the skier had increased his weight by taking a bag on his back, would the ℎ height be higher, less or remain the same? Explain. (c) If there were air resistance, would the height of h increase, decrease or remain the same? Please explain. (d) Calculate what would be h if the length of the path above the jump point of the ramp (i.e. the part above the dashed line according to the figure) were d = 50 ? and the kinetic coefficient of friction uk = 0.2.
a body with a mass of 73 kg is dropped from a height of 700 m without initial speed. As it falls, the body finds a force due to the resistance of the air proportional to its speed. If the limit speed of this body is 98 m/sg a) find an expression for the speed of the body at any time t and b) an expression for the position of the body at any time t
The football player in the picture kicks the 1.5-lb ball with a velocity vA of 50 mph, as shown. The ball bounces off the turf, having a coefficient of restitution with the ball of 0.35, before landing a second time in mud, getting stuck there. Based on this: a) What will the rebound velocity, v’B, and angle be? b) How much less high will the ball bounce than it reached during the initial kick? c) What total distance will the ball travel?