Homework Answers
A 30-kg child stands at one end of a floating 20-kg canoe that is 5.0-m long...
A 30-kg child stands at one end of a floating 20-kg canoe that is 5.0-m long and initially at rest in the water. The child then slowly walks to the other end of the canoe. How far does the canoe move in the water, assuming water friction is negligible? Please show step by step and explain.
A 55.0 kg woman stands up in a 70.0 kg canoe of length 5.00 m ....
A 55.0 kg woman stands up in a 70.0 kg canoe of length 5.00 m . She walks from a point 1.00 m from one end to a point 1.00 m from the other end. If the resistance of the water is negligible, how far does the canoe move during this process?
run at full speed off the end of pool of water. The winning dog is the...
run at full speed off the end of pool of water. The winning dog is the one that lands farthest from the end of the dock. If a runs at 8.5 m/s (a pretty typical speed for this event) straight off the end of a dock that is 0.61 m (2 ft, a standard height) above the water, how far will the dog go before splashing down? In the sport of dock jumping, dogs a dock that sits a few...
Problem 8.106 A 45.0-kg woman stands up in a 60.0-kg canoe 5.00 m long. She walks from a point 1.00 m from one e...
Problem
8.106
A 45.0-kg
woman stands up in a 60.0-kg
canoe 5.00
m long. She walks from a point 1.00
m from one end to a point 1.00
m from the other end (the figure (Figure 1) ).
Part A
If you ignore resistance to motion of the
canoe in the water, how far does the canoe move during this
process?
dcanoe =
m to the left
In Figure (a), a 4.4 kg dog stands on a 14 kg flatboat at a distance...
In Figure (a), a 4.4 kg dog stands on a 14 kg flatboat at a distance D = 7.3 m from the shore. He walks 1.7 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore. (Hint: See Figure (b). The dog moves leftward and the boat moves rightward, but does the center of mass of the boat + dog system move?)
A 46.7 kg student runs down the sidewalk and jumps with a horizontal speed of 4.10...
A 46.7 kg student runs down the sidewalk and jumps with a horizontal speed of 4.10 m/s onto a stationary skateboard. The student and skateboard move down the sidewalk with a speed of 3.86 m/s. a) Find the mass of the skateboard. Answer in units of kg b) How fast would the student have to jump to have a final speed of 6.54 m/s? Answer in units of m/s..
Problem 1 A dog starts running at a constant speed v0= 6 m/s. Initially, the dog...
Problem 1 A dog starts running at a constant speed v0= 6 m/s. Initially, the dog is at a distance d= 10 m from a window. The window is located at a height h= 20 m above the ground. On top of the window there is a plant pot of mass m = 3 kg. The pot falls from the window 2 seconds after the dog starts running. a) What is the speed (inm/s2) of the pot when it reaches...
A 6000-kg cart carrying a vertical rocket launcher moves to the right at a constant speed...
A 6000-kg cart carrying a vertical rocket launcher moves to the right at a constant speed of 30.0 m/s along a horizontal track. It launches a 40.3-kg rocket vertically upward with an initial speed of 46.1 m/s relative to the cart. How high will the rocket go? Where, relative to the cart, will the rocket land? How far does the cart move while the rocket is in the air? At what angle, relative to the horizontal, is the rocket traveling...
A boy runs straight off the end of a diving platform at a speed of 4.40...
A boy runs straight off the end of a diving platform at a speed of 4.40 m/s. The platform is 12.4 m above the surface of the water. 1) Calculate the boy’s speed when he hits the water. (Neglect any effects due to air resistance.) (Express your answer to three significant figures.) 2) How much time is required for the boy to reach the water? (Neglect any effects due to air resistance.) (Express your answer to three significant figures.) 3)...
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating...
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 215 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +4.0 m/s relative to the shore, and then hops onto an identical floating log that is initially at rest. Neglect any friction and resistance between the logs and the water. (a) What is the velocity of the first log just...
run at full speed off the end of pool of water. The winning dog is the one that lands farthest from the end of the dock. If a runs at 8.5 m/s (a pretty typical speed for this event) straight off the end of a dock that is 0.61 m (2 ft, a standard height) above the water, how far will the dog go before splashing down? In the sport of dock jumping, dogs a dock that sits a few...
Problem
8.106
A 45.0-kg
woman stands up in a 60.0-kg
canoe 5.00
m long. She walks from a point 1.00
m from one end to a point 1.00
m from the other end (the figure (Figure 1) ).
Part A
If you ignore resistance to motion of the
canoe in the water, how far does the canoe move during this
process?
dcanoe =
m to the left
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