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    A cart traveling at 5.93 m/s (this movement defines the positive direction) has a head on elastic collision with a 32.1 kg cart traveling at 2.28 m/s. If the final velocity of the first cart is 1.882 m/s, what is it's mass?

    kg?

    A cart traveling at 7.76 m/s (this movement defines the positive direction) has a head on elastic collision with a 44.3 kg cart traveling at 0.52 m/s. If the final velocity of the first cart is -6.4 m/s, what is it's mass?

    kg?

    A cart traveling at 4.63 m/s (this movement defines the positive direction) has a head on elastic collision with a 2.8 kg cart traveling at 0.17 m/s. If the final velocity of the first cart is -3.175 m/s, what is it's mass?

    kg?

    A cart traveling at 4.28 m/s (this movement defines the positive direction) has a head on elastic collision with a 23.7 kg cart traveling at 5.7 m/s. If the final velocity of the first cart is 5.216 m/s, what is it's mass?

    kg?

    A cart traveling at 2.89 m/s (this movement defines the positive direction) has a head on elastic collision with a 0.9 kg cart traveling at 2.42 m/s. If the final velocity of the first cart is 2.655 m/s, what is it's mass?

    kg?

    A cart traveling at 8.39 m/s (this movement defines the positive direction) has a head on elastic collision with a 10.3 kg cart traveling at 0.57 m/s. If the final velocity of the first cart is -3.034 m/s, what is it's mass?

    kg?