ASSUME THE TWO PLAYERS WERE INITIALLY RUNNING DIRECTLY AT ONE ANOTHER. NEGLECTING THE LEGALITY OF THE PLAY AND THE EFFECTS DUE TO DIGGING IN OF CLEATS:
a) NEITHER PLAYER WILL DRIVE THE OTHER BACKWARD.
b) THIS IS A SIMPL EXAMPLE OF AN ELASTIC COLLISION
c) THE LINEBACKER WILL DRIVE THE HALFBACK BACKWARD.
2007-08-03 18:54:29 · 2 answers · asked by Josh Muller 1 in Science & Mathematics ➔ Physics
explain please
2007-08-03 18:58:50 · update #1
This is an example of an INELASTIC collision. Momentum is conserved. Before the collision the system momentum is 100kg*2m/s - 80kg*3m/s = -40kg*m/s The negative sign is the opposite of the linebacker's direction (which I took to be positive). The momentum after must be the same, -40kg*m/s, which means the final velocity of the two players will be 40/180 = -0.22m/s, or 0.22m/s in the direction of the halfback.
2007-08-03 19:39:56 · answer #1 · answered by gp4rts 7 · 0⤊ 0⤋
It's a trick question. Football players are measured in pounds and they move in feet and inches. You must be talking about soccer players.
2007-08-04 02:04:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋