1. A boy stands on one end of a boat, and then walks to the other...
1. A boy stands on one end of a boat, and then walks to the other end. Does the boat
move? Why or why not?
Homework Answers
Yes the Boat moves backward, since the boy and boat are standing Stationary initially the initial momentum of boat and boy is zero. When the boy moves forward to the other end of boat, the Velocity of boat must be in backward for final momentum of boy and boat to be zero.
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1. A boy stands on one end of a boat, and then walks to the
other...
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
A person weighing 60 kg is standing at one end of a flatboat so that he...
A person weighing 60 kg is standing at one end of a flatboat so that he is 10 m from the shore ( see fig. below). He walks towards the other end of the boat until he arrives at the middle of the boat. He then finds out he is 1.2 m farther from the shore than before. The flatboat weighs 180 kg and one can assume there is no friction between it and the water. a) How far away...
Jack and Jill are in a boat 4 m long. The boat has mass 48 kg...
Jack and Jill are in a boat 4 m long. The boat has mass 48 kg and its weight is uniformly distributed along its length. Jill (mass 30 kg) sits at one end and Jack (mass 45 kg) sits at the other end. The boat is in still water, not moving as children stay still. If Jack and Jill exchange their positions, by how much does the boat move? Ignore any resistance of the lake's water.
A 100kg person is sitting on the left edge of his boat in still water at...
A 100kg person is sitting on the left edge of his boat in still water at 7.5m from the shore. The boat also has a 100kg mass, is 6. long, and symmetrical shape so that its center of mass is the middle where the whole weight of the boat can be assumed to be acting. a. How far to the right is the center of mass (CM) of the boat from the shore. b. How far is the CM of...
Problem 5.53 < 3 of 3 > Review Part A A boy stands out at the...
Problem 5.53 < 3 of 3 > Review Part A A boy stands out at the end of the diving board, which is supported by two Springs A and B, each having a stiffness of k = 15 kN/m. In the position shown the board is horizontal. Assume the spring A is fixed to both the ground and the board, and spring B is fixed to the ground only (Figure 1) If the boy has a mass of 40 kg,...
A boy walks 4 km west, 2 km south, and then 1 km east.determine the total...
A boy walks 4 km west, 2 km south, and then 1 km east.determine the total distance he walked and his net displacement. If it took him 1.2 hours to complete the walk, find his average velocity
A boat moves through the water with two forces acting on it. One is a 1,875-N...
A boat moves through the water with two forces acting on it. One is a 1,875-N forward push by the water on the propeller, and the other is a 1,100-N resistive force due to the water around the bow (a) what is the acceleration of the 1,300-kg boat? m/s 2 (b) If it starts from rest, how far will the boat move in 15.0 (c) What will its velocity be at the end of that time? m/s
A boat moves through the water with two forces acting on it. One is a 1,875-N...
A boat moves through the water with two forces acting on it. One is a 1,875-N forward push by the water on the propeller, and the other is a 1,000-N resistive force due to the water around the bow. (a) What is the acceleration of the 1,500-kg boat? m/s 2 (b) If it starts from rest, how far will the boat move in 25.0 s? (c) What will its velocity be at the end of that time? m/s
45. A boat moves through the water with two forces acting on it. One is a...
45. A boat moves through the water with two forces acting on it. One is a 2.10 x 10 N forward push by the motor, and the other is a 1.80 x 103 N resistive force due to the water. a. What is the acceleration of the 1200 kg boat? b. If it starts from rest, how far will it move in 12 s? c. What will its speed be at the end of this time
A 55.3 kg wood board is resting on very smooth ice in the middle of a...
A 55.3 kg wood board is resting on very smooth ice in the middle of a frozen lake. A 48.3 kg boy stands at one end of the board. He walks from one end of the board to the other end with a velocity of 1.25 m/s relative to the ice in the positive direction. What is the velocity of the board relative to the ice?
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
A person weighing 60 kg is standing at one end of a flatboat so that he is 10 m from the shore ( see fig. below). He walks towards the other end of the boat until he arrives at the middle of the boat. He then finds out he is 1.2 m farther from the shore than before. The flatboat weighs 180 kg and one can assume there is no friction between it and the water. a) How far away...
Jack and Jill are in a boat 4 m long. The boat has mass 48 kg and its weight is uniformly distributed along its length. Jill (mass 30 kg) sits at one end and Jack (mass 45 kg) sits at the other end. The boat is in still water, not moving as children stay still. If Jack and Jill exchange their positions, by how much does the boat move? Ignore any resistance of the lake's water.
Problem 5.53 < 3 of 3 > Review Part A A boy stands out at the end of the diving board, which is supported by two Springs A and B, each having a stiffness of k = 15 kN/m. In the position shown the board is horizontal. Assume the spring A is fixed to both the ground and the board, and spring B is fixed to the ground only (Figure 1) If the boy has a mass of 40 kg,...
A boat moves through the water with two forces acting on it. One is a 1,875-N forward push by the water on the propeller, and the other is a 1,100-N resistive force due to the water around the bow (a) what is the acceleration of the 1,300-kg boat? m/s 2 (b) If it starts from rest, how far will the boat move in 15.0 (c) What will its velocity be at the end of that time? m/s
A boat moves through the water with two forces acting on it. One is a 1,875-N forward push by the water on the propeller, and the other is a 1,000-N resistive force due to the water around the bow. (a) What is the acceleration of the 1,500-kg boat? m/s 2 (b) If it starts from rest, how far will the boat move in 25.0 s? (c) What will its velocity be at the end of that time? m/s
45. A boat moves through the water with two forces acting on it. One is a 2.10 x 10 N forward push by the motor, and the other is a 1.80 x 103 N resistive force due to the water. a. What is the acceleration of the 1200 kg boat? b. If it starts from rest, how far will it move in 12 s? c. What will its speed be at the end of this time
A 55.3 kg wood board is resting on very smooth ice in the middle of a frozen lake. A 48.3 kg boy stands at one end of the board. He walks from one end of the board to the other end with a velocity of 1.25 m/s relative to the ice in the positive direction. What is the velocity of the board relative to the ice?
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