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1. Ellawyn and Gwendylla are ice skating on frictionless ice. Ellawyn accidentally skates into Gwendylla bounces...
an ice skater sits at rest (4 pts) An ice skater sits at rest in the...
an ice skater sits at rest
(4 pts) An ice skater sits at rest in the middle of a frictionless ice rink. She takes off both of her skates with a total mass of 2 kg and throws them away from her with a velocity of 10 mis. The mass of the ice skater without the skates on is 50 kg. If the wall is 1 0 m away, how long will it take her to reach the wall? a)...
Please sketch the initial and final situations During an ice skating performance, an initially motionless 80.0-kg...
Please sketch the initial and final situations
During an ice skating performance, an initially motionless 80.0-kg clown throws a fake barbell away. The clown's ice skates allow her to recoil without friction. If the clown recoils with a velocity of 0.500m/s and the barbell is thrown with a velocity of 10.0m/s. a)Determine the mass of the barbell; b)The clown throws the barbell in 0.40-s, determine the force exerted to the barbell by the clown. (Please sketch the "initial” and "final”...
A 70.0 kg archer, standing on frictionless ice, shoots a 200 g arrow at a speed of 100 m/s. What ...
A 70.0 kg archer, standing on frictionless ice, shoots a 200 g arrow at a speed of 100 m/s. What is the recoil speed of the archer? A 30 kg beaver is standing on the ice minding his own business. This same arrow travelling at 100 m/s bounces off the beaver, causing the beaverto slide across the ice at 1.2 m/s. What is the rebound velocity ofthe arrow? What percent of kineticenergy was conserved in the collision with the beaver?...
A young ice skater with mass 35.0 kg has fallen and is sliding on the frictionless...
A young ice skater with mass 35.0 kg has fallen and is sliding on the frictionless ice of a skating rink with a speed of 20.0 m/s. a. What is the magnitude of her linear momentum when she has this speed? Express your answer with the appropriate units. b. What is her kinetic energy? Express your answer with the appropriate units. c. What constant net horizontal force must be applied to the skater to bring her to rest in 6.00 s?...
Block 1 of mass m1- 0.5 kg slides on frictionless surface with velocity 1 7m/s and...
Block 1 of mass m1- 0.5 kg slides on frictionless surface with velocity 1 7m/s and hits block 2 of mass m2 8 kg. Block 1 bounces back with velocity v 3 m/s. Block 2 is fixed to a spring and begins at equilibrium. The spring has spring constant k 20N/m. If the collision occurs instantaneously, how far does block 2 move from its initial position? lo n1 1n2 Pick the correct answer 0.16 m o 0.40 m o 0.71...
need help with this two questions, please !! Two ice skaters, Daniel (mass 60.0 kg) and...
need help with this two questions, please !!
Two ice skaters, Daniel (mass 60.0 kg) and Rebecca (mass 45.0 kg), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 13.0 m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 7.00 m/s at an angle of 54.1" from her initial direction. Both skaters move on the frictionless, horizontal surface of the rink. What is...
1- A block slides along a frictionless surface at 2.4 m/s. A second 3.5-kg block, sliding...
1- A block slides along a frictionless surface at 2.4 m/s. A second 3.5-kg block, sliding at a faster 7.5 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 4.6 m/s. What was the mass of the first block? 2-A 15 g ball of clay traveling west at 4 m/s collides with a 50 g ball of clay traveling 30° north of east at 3.5 m/s. What is the speed...
QUESTION 1 Two skaters, one of mass 80 kg, the other of mass 40 kg, are...
QUESTION 1 Two skaters, one of mass 80 kg, the other of mass 40 kg, are standing next to each other on frictionless ice rink. The 40 kg skater pushes the 80 kg skater. After the push, the 80 kg skater is going at 1 m/s. How fast and in what direction is the 40 kg skater going after the push? (HINT: use the fact that since there are no external forces, the velocity of the center of mass of...
1. An unknown mass (mı) on a rough horizontal surface is attached by a wire that passes over a massless, frictionless pulley to a 2.50kg mass (m2) as shown below. The bottom of the hanging mass is 1....
1. An unknown mass (mı) on a rough horizontal surface is attached by a wire that passes over a massless, frictionless pulley to a 2.50kg mass (m2) as shown below. The bottom of the hanging mass is 1.50m above the floor. The system is released from rest at t-0s and the 2.50kg mass strikes the floor 0.82s later. The system is now returned to its initial position and a 1.20kg mass is placed on top of the block of mass...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between the...
an ice skater sits at rest
(4 pts) An ice skater sits at rest in the middle of a frictionless ice rink. She takes off both of her skates with a total mass of 2 kg and throws them away from her with a velocity of 10 mis. The mass of the ice skater without the skates on is 50 kg. If the wall is 1 0 m away, how long will it take her to reach the wall? a)...
Please sketch the initial and final situations
During an ice skating performance, an initially motionless 80.0-kg clown throws a fake barbell away. The clown's ice skates allow her to recoil without friction. If the clown recoils with a velocity of 0.500m/s and the barbell is thrown with a velocity of 10.0m/s. a)Determine the mass of the barbell; b)The clown throws the barbell in 0.40-s, determine the force exerted to the barbell by the clown. (Please sketch the "initial” and "final”...
A 70.0 kg archer, standing on frictionless ice, shoots a 200 g arrow at a speed of 100 m/s. What is the recoil speed of the archer? A 30 kg beaver is standing on the ice minding his own business. This same arrow travelling at 100 m/s bounces off the beaver, causing the beaverto slide across the ice at 1.2 m/s. What is the rebound velocity ofthe arrow? What percent of kineticenergy was conserved in the collision with the beaver?...
Block 1 of mass m1- 0.5 kg slides on frictionless surface with velocity 1 7m/s and hits block 2 of mass m2 8 kg. Block 1 bounces back with velocity v 3 m/s. Block 2 is fixed to a spring and begins at equilibrium. The spring has spring constant k 20N/m. If the collision occurs instantaneously, how far does block 2 move from its initial position? lo n1 1n2 Pick the correct answer 0.16 m o 0.40 m o 0.71...
need help with this two questions, please !!
Two ice skaters, Daniel (mass 60.0 kg) and Rebecca (mass 45.0 kg), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, who is moving at 13.0 m/s before she collides with him. After the collision, Rebecca has a velocity of magnitude 7.00 m/s at an angle of 54.1" from her initial direction. Both skaters move on the frictionless, horizontal surface of the rink. What is...
QUESTION 1 Two skaters, one of mass 80 kg, the other of mass 40 kg, are standing next to each other on frictionless ice rink. The 40 kg skater pushes the 80 kg skater. After the push, the 80 kg skater is going at 1 m/s. How fast and in what direction is the 40 kg skater going after the push? (HINT: use the fact that since there are no external forces, the velocity of the center of mass of...
1. An unknown mass (mı) on a rough horizontal surface is attached by a wire that passes over a massless, frictionless pulley to a 2.50kg mass (m2) as shown below. The bottom of the hanging mass is 1.50m above the floor. The system is released from rest at t-0s and the 2.50kg mass strikes the floor 0.82s later. The system is now returned to its initial position and a 1.20kg mass is placed on top of the block of mass...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between the...
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