1. A football player of mass 90 kg is running at 10 m/s and catches a football of mass
momentm will be conserved >
90*10 + 0.5*40 = 90.5*v
v = 10.166 m/s
energy lost = 1/2( 90*10^2 + 0.5* 40^2 - 90.5^10.166^2) = 223.523 J
1. A football player of mass 90 kg is running at 10 m/s and catches a...
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.
A 115-kg football player is running toward you at 12 m/s. If you have stopped him in 296s, what average force would be required?
A 70.0-kg football player runs North at 9.0 m/s and is met by a 60.0 kg defensive tackler running South at 10.0 m/s. The total momentum is?
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...
5) Fred (mass 60 kg) is running with the football at a speed of 6.0 m/s when he is met head-on by Brutus (mass 120 kg), who is moving at 4.0 m/s. Brutus grabs Fred in a tight grip, and they fall to the ground. Which way do they slide and how far? The coefficient of kinetic friction between football uniforms and the ground is 0.30.
Q 7.31: A football player with a mass of 110 kg runs into a stationary tackling sled that has a mass of 250 kg. Both the player and sled move together and come to rest 25 cm from the impact. If the coefficient of kinetic the ground is 0.5, what was the initial speed of the football player? A 6.6 m/s B 9.8 m/s C 2.2 m/s D 5.1 m/s E 8.0 m/s
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
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...
In a football game, a linebacker with a mass of 133.2 kg hits a running back with a force of 453.7 Newtons. If the running back's mass is 75 kg, what is the amount of force the running back hits the linebacker with in Newtons?
Calculate the final speed (in m/s) of a 114 kg rugby player who is initially running at 7.25 m/s but collides head-on with a padded goalpost and experiences a backward force of 1.75 ✕ 104 N for 6.50 ✕ 10−2 s.