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    A cart traveling at 7.77 m/s (this movement defines the positive direction) has a head on elastic collision with a 3.6 kg cart traveling at 4.15 m/s. If the final velocity of the first cart is 7.27 m/s, what is it's mass?

    kg?

    A cart traveling at 5.12 m/s (this movement defines the positive direction) has a head on elastic collision with a 31.4 kg cart traveling at 6.86 m/s. If the final velocity of the first cart is 8.01 m/s, what is it's mass?

    kg?

    A cart traveling at 5.72 m/s (this movement defines the positive direction) has a head on elastic collision with a 30.7 kg cart traveling at -0.75 m/s. If the final velocity of the first cart is -5.63 m/s, what is it's mass?

    kg?

    A cart traveling at 3.25 m/s (this movement defines the positive direction) has a head on elastic collision with a 21.3 kg cart traveling at 2.38 m/s. If the final velocity of the first cart is 2.643 m/s, what is it's mass?

    kg?

    A cart traveling at 1.58 m/s (this movement defines the positive direction) has a head on elastic collision with a 21.6 kg cart traveling at 0.39 m/s. If the final velocity of the first cart is 0.6082 m/s, what is it's mass?

    kg?

    A cart traveling at 0.79 m/s (this movement defines the positive direction) has a head on elastic collision with a 24.5 kg cart traveling at 4.1 m/s. If the final velocity of the first cart is 3.749 m/s, what is it's mass?

    kg?


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