A car (mass = 1190 kg) is traveling at43 m/s when it collides head-on with aspor

Question

A car (mass = 1190 kg) is traveling at43 m/s when it collides head-on with asport utility vehicle (mass = 2470 kg)traveling in the opposite direction. In the collision, the twovehicles come to a halt. At what speed was the sport utilityvehicle traveling?
1 m

ssm A 2.00 kg ball (ball 1), moving to the right at avelocity of +1.00m/s on a frictionless table, collides head-on with a stationary7.80 kg ball (ball 2). Find the finalvelocities of the balls if the collision is as specifiedbelow. (a) elastic collision ball 1 1 m/s ball 2 2 m/s
(b) completely inelastic collision ball 1 3 m/s ball 2 4 m/s

(a) elastic collision ball 1 1 m/s ball 2 2 m/s
(b) completely inelastic collision ball 1 3 m/s ball 2 4 m/s ball 1 1 m/s ball 2 2 m/s

Explanation / Answer

Momentum of car = mv                             = 1190 kg * 43 m/s                             = 51170 kgm/s The two vehicles come to a halt when they have samemomentum              mv = MV V = mv / M          = 51170kgm/s / 2470 kg          =20.71 m/s

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