Problem 5 (Lumberjack Riding a Log) An 75-kg lumberjack stands at one end of a 350-kg...
A 90-kg lumberjack stands at one end of a 400-kg floating log, as shown in the following figure. Both the log and the lumberjack are at rest initially. The lumberjack then trots toward the shore with a speed of 2.7 m/s relative to the shore. A) What is the speed of the log relative to the shore? Ignore friction between the log and the water. B) If the mass of the log were greater, would its speed relative to the...
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...
A lumberjack (mass 98 kg) is standing at rest on one end of a floating log (mass = 290 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +3.9 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 before...
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...
Could you please explain your answer? Thank you a velocity of A lumberjack (mass-98 kg) is standing at rest on one end of a floating log (mass230 kg) that is also at rest. The lumherjack runs to the other end of the log, attaining an identical laating log that is initially at rest. Neglect any Triction and resistance between the logs and the water. 2.8 mfs relative to the shore, and then haps onto ting log that is (a) what...
A 70-kg man is standing on the end of a 250-kg log that is floating in the water. Both the man and the log are at rest, and the log is 3.0 m long. If the man walks to the other end of the log, how far will the log move in the water? Ignore any forces exerted on the log by the water.
Review Constants Periodic Table Part A A 75-kg astronaut (including spacesuit and equipment) is floating at rest a distance of 15 m from the spaceship when she runs out of oxygen and fuel to power her back to the spaceship. She removes her oxygen tank (3.0 kg) and flings it away from the ship at a speed of 15 m/s relative to the ship. At what speed relative to the ship does she recoil toward the spaceship? Express your answer...
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...
A small 0.37 g bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. The other end of the bar pivots about a nail driven into the table and can rotate freely, without friction. The bar has mass 1.1g and is 2.89 cm in length. The bug jumps off in the horizontal direction, perpendicular to the bar, with a speed of 4.3 cm/s relative to the table. What is the...