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A 55.3 kg wood board is resting on very smooth ice in the middle of a...
A 45.0-kg girl is standing on a 130-kg plank. The plank, originally at rest, is free...
A 45.0-kg girl is standing on a 130-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.59 m/s to the right relative to the plank. (Let the direction the girl is moving in be positive. Indicate the direction with the sign of your answer.) (a) What is her velocity relative to the surface of ice?...
Neytiri is standing on the end of a long thin uniform board of length L ....
Neytiri is standing on the end
of a long thin uniform board of length L . Half of the board
including the end where Neytiri is standing rests on very slippery
ice with the other half over open water, as shown. Lucky for our
calculations, the board and Neytiri have the same mass M ! !
a) Find the x coordinate, relative to the ice, of the overall CM
of Neytiri and the board. Define x = 0 at her...
Problem 11.27 MasteringPhysics Review A 68.5 kg football player is gliding across very smooth ice at 2.15 m/s. He throws a 0.440 kg football straight forward. Part A What is the player's spee...
Problem 11.27 MasteringPhysics Review A 68.5 kg football player is gliding across very smooth ice at 2.15 m/s. He throws a 0.440 kg football straight forward. Part A What is the player's speed afterward if the ball is thrown at 14.0 m/s relative to the ground Express your answer with the appropriate units. u- 2.06 SubmitRequest Answer Incorrect; Try Again Part B What is the player's speed afterward ithe ball is thrown at 14.0 m/s relative to the player? Express...
10.0 points 003 A 7.65 g bullet is stopped in a 6.4 kg block of wood....
10.0 points 003 A 7.65 g bullet is stopped in a 6.4 kg block of wood. The speed of the bullet-plus-wood combination immediately after the collision is 0.851 m/s. What was the original speed of the bullet? Answer in units of m/s. 10.0 points 004 Two cars, one of mass 1100 kg, and the second of mass 2100 kg, are moving at right angles to each other when they collide and stick to- gether. The initial velocity of the first...
A contestant in a winter sporting event pulls a 42 kg block of ice in the positive horizontal direction
A contestant in a winter sporting event pulls a 42 kg block of ice in the positive horizontal direction with a rope over his shoulders across a frozen lake as shown in the figure. Assume the coefficients of static and kinetic friction are μs=0.1 and μk=0.03. Part (a) Calculate the minimum force F he must exert to get the block sliding in newtons. Part (b) What is its acceleration in m/s2 once it starts to move, if that force is maintained?
1. A 67.0 kg football player is gliding across very smooth ice at 2.10 m/s . He throws a 0.460 kg football straight forw...
1. A 67.0 kg football player is gliding across very smooth ice at 2.10 m/s . He throws a 0.460 kg football straight forward. Part A: What is the player's speed afterward if the ball is thrown at 14.0 m/s relative to the ground? Express your answer with the appropriate units. Part B: What is the player's speed afterward if the ball is thrown at 14.0 m/s relative to the player? Express your answer with the appropriate units. 2.A ceiling...
Ethan, whose mass is 80 kg, stands at one end of a very long. stationary wheeled...
Ethan, whose mass is 80 kg, stands at one end of a very long. stationary wheeled cart that has a mass of 300 kg. He then starts sprinting toward the other end of the cart. He soon reaches his top speed of 8.0 m/s, measured relative to the cart. Part A What is the cart's speed when Ethan reaches top speed? Express your answer with the appropriate units. Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 5...
#4-7 Two ice skaters stand facing each other at rest on a frozen pond. They push...
#4-7
Two ice skaters stand facing each other at rest on a frozen pond. They push off against one another and the 48 kg skater acquires a speed of 0.69 m/s If the other skater acquires a speed of 0.81 m/s, what is her mass in kilograms? kg My Notes Ask Your Teacher -/2 points HAFColPhys1 8.2WA019. O5 Submissiens Used A man holding a rock sits on a sled that is sliding across a frozen lake (negligible friction) with a...
Two cars approach an ice-covered intersection. One car, of mass 1.25 103 kg, is initially traveling...
Two cars approach an ice-covered intersection. One car, of mass 1.25 103 kg, is initially traveling north at 11.1 m/s. The other car, of mass 1.58 103 kg, is initially traveling east at 11.1 m/s. The cars reach the intersection at the same instant, collide, and move off coupled together. Find the velocity of the center of mass of the two-car system just after the collision. Please provide magnitude & direction (ex - 30 degrees North of West)
1 2 3 4 56 A uniform disk of mass 0.76 kg and radius 5.7 cm...
1 2 3 4 56 A uniform disk of mass 0.76 kg and radius 5.7 cm is mounted in the center of a 10 cm axle and spun at 795 rev/min. The axle is then placed in a horizontal position with one end resting on a pivot. The other end is given an initial horizontal velocity such that the precession is smooth with no nutation. 1) (a) What is the magnitude of the angular velocity of precession? rad/s Submit You...
Neytiri is standing on the end
of a long thin uniform board of length L . Half of the board
including the end where Neytiri is standing rests on very slippery
ice with the other half over open water, as shown. Lucky for our
calculations, the board and Neytiri have the same mass M ! !
a) Find the x coordinate, relative to the ice, of the overall CM
of Neytiri and the board. Define x = 0 at her...
Problem 11.27 MasteringPhysics Review A 68.5 kg football player is gliding across very smooth ice at 2.15 m/s. He throws a 0.440 kg football straight forward. Part A What is the player's speed afterward if the ball is thrown at 14.0 m/s relative to the ground Express your answer with the appropriate units. u- 2.06 SubmitRequest Answer Incorrect; Try Again Part B What is the player's speed afterward ithe ball is thrown at 14.0 m/s relative to the player? Express...
10.0 points 003 A 7.65 g bullet is stopped in a 6.4 kg block of wood. The speed of the bullet-plus-wood combination immediately after the collision is 0.851 m/s. What was the original speed of the bullet? Answer in units of m/s. 10.0 points 004 Two cars, one of mass 1100 kg, and the second of mass 2100 kg, are moving at right angles to each other when they collide and stick to- gether. The initial velocity of the first...
Ethan, whose mass is 80 kg, stands at one end of a very long. stationary wheeled cart that has a mass of 300 kg. He then starts sprinting toward the other end of the cart. He soon reaches his top speed of 8.0 m/s, measured relative to the cart. Part A What is the cart's speed when Ethan reaches top speed? Express your answer with the appropriate units. Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 5...
#4-7
Two ice skaters stand facing each other at rest on a frozen pond. They push off against one another and the 48 kg skater acquires a speed of 0.69 m/s If the other skater acquires a speed of 0.81 m/s, what is her mass in kilograms? kg My Notes Ask Your Teacher -/2 points HAFColPhys1 8.2WA019. O5 Submissiens Used A man holding a rock sits on a sled that is sliding across a frozen lake (negligible friction) with a...
1 2 3 4 56 A uniform disk of mass 0.76 kg and radius 5.7 cm is mounted in the center of a 10 cm axle and spun at 795 rev/min. The axle is then placed in a horizontal position with one end resting on a pivot. The other end is given an initial horizontal velocity such that the precession is smooth with no nutation. 1) (a) What is the magnitude of the angular velocity of precession? rad/s Submit You...
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