The figure below shows two 28.5 kg ice sleds that are placed a short distance apart, one directly behind the other. A 3.4 kg cat initially standing on one sled jumps to the other one and then back to the first. Both jumps are made at a speed of 2.1 m/s relative to the ice. What are the final speeds of the two sleds? m/s first sled (left most sled) m/s second sled (right most sled)


The figure below shows two 28.5 kg ice sleds that are placed a short distance apart,...
The figure shows two 20.5 kg ice sleds that are placed a short distance apart, one directly behind the other. A 3.99 kg cat initially standing on one sled jumps to the other one and then back to the first. Both jumps are made at a speed of 3.54 m/s relative to the ice. What are the final speeds of (a) the first sled and (b) the other sled?
Two ice skaters (m = 50kg) are standing a distance apart from one another. One skater throws a ball (m = 5kg) at a speed of 10 m/s to the other skater. What is the relative velocity between the skaters after the ball is caught? a. 0.5 m/s b. 1 m/s c. 1.9 m/s From before the ball is thrown to after the ball is caught, what happens to kinetic energy? a. Increases b. Decreases c. Kinetic energy does not...
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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 ice skaters are gliding together along the ice, both moving at the same, constant velocity (sliding without exerting a force). The first skater (the one in the back), with mass M1 = 62.3 kg, pushes the second skater (the one in front), with mass M2 = 70.4 kg, directly forward in the direction they are initially moving. After the push the first skater is not moving (velocity = 0) and the second skater is moving with a velocity of...
A lumberjack (mass = 94.4 kg) is standing at rest on one end of a floating log (mass = 279 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +2.64 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 (again...
Two ice skaters are gliding together along the ice, both moving at a constant velocity vi = 4.39 m/s (sliding without exerting a force). The first skater, the one in the back, with mass M1 = 79.6 kg, pushes the second skater, the one in front, with mass M2 = 57.3 kg, directly forward in the direction they are initially moving. After the push the first skater is not moving (velocity = 0) and the second skater is moving with...
Two ice skaters are gliding together along the ice, both moving at a constant velocity vi = 1.73 m/s (sliding without exerting a force). The first skater, the one in the back, with mass M1 = 75.2 kg, pushes the second skater, the one in front, with mass M2 = 55.2 kg, directly forward in the direction they are initially moving. After the push the first skater is not moving (velocity = 0) and the second skater is moving with...
Chapter 07, Problem 19 A lumberjack (mass = 102 kg) is standing at rest on one end of a floating log (mass = 281 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +2.76 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...
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 275 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +3.5 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...
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...