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5) Fred (mass 60 kg) is running with the football at a speed of 6.0 m/s...
Fred (mass 62 kg ) is running with the football at a speed of 5.8 m/s when he is met head-on by Brutus (mass 120 kg ), who is moving at 4.5 m/s. Brutus grabs Fred in a tight grip, and they fall to the ground. Part A Which way do they slide? in the direction Brutus was running in the direction Fred was running Submit Request Answer Part B How far do they slide? The coefficient of kinetic friction...
Two football players are pushing a 60 kg blocking sled across the field at a constant speed of 2.5 m/s. The coefficient of kinetic friction between the grass and the sled is 0.30. Once they stop pushing, how far will the sled slide before coming to rest?
Suppose that a 112.5 kg football player running at 8.5 m/s catches a 0.44 kg ball moving at a speed of 25 m/s with his feet off the ground, while both of them are moving horizontally. Calculate the change in kinetic energy of the system, in joules, after the player catches the ball. Calculate the change in kinetic energy of the system, in joules, in this case.
1. A football player of mass 90 kg is running at 10 m/s and catches a football of mass
Th figure below shows a mass m=1.0 kg which is initially moving with speed v=7.2 m/s at the top of a frictionless hill of height h=3.5 m. It slides down the hill until it encounters a flat section with unknown coefficient of kinetic friction Hk. If the object travels a distance D=10.9 m before reaching a speed of v/2, what is the coefficient of kinetic friction Mk? Select one: O 0.35 O 0.40 O 0.55 O 0.50 O 0.30
A 100-kg football linebacker moving at 2.5 m/s tackles head-on an 80-kg halfback running 3.0 m/s. Neglecting the effects due to digging in of the cleats, (a) the halfback will drive the linebacker backward (b) neither player will drive the other backward (c) the linebacker will drive the halfback backward (d) this is a simple example of an elastic collision
Football Collision A 96 kg running back, moving at 5.29 m/s, runs into a 109 kg defender who is initially at rest. What is the speed of the players just after their perfectly inelastic collision? Incorrect. What is the change in their total kinetic energy due to this totally inelastic collision?
Doug hits a hockey puck, giving it an initial velcoity of 6.0 m/s. If the coefficient of kinetic friction between ice and puck is 0.050, how far will the puck slide before stopping?
A 73.3-kg linebacker ("X") is running at 6.71 m/s directly toward the sideline of a football field. He tackles a 91.7-kg running back ("O") moving at 8.61 m/s straight toward the goal line, perpendicular to the original direction of the linebacker. As a result of the collision both players momentarily leave the ground and go out-of-bounds at an angle φ relative to the sideline, as shown in the diagrams below. What is the common speed of the players, immediately after...
A beanbag of mass 0.2 kg is thrown with a horizontal speed of 8.3 m/s into a box of identical mass initially at rest on a flat table. The two objects undergo an inelastic collision and begin to slide across the table together, slowing down due to friction. If the box slides 1.11 meters before coming to a rest, what is the coefficient of kinetic friction between the box and table surfaces?