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A cart traveling at 6.81 m/s (this movement defines the positive direction) has a head on perfectly inelastic collision with a 40.5 kg cart traveling at -1.22 m/s. The final velocity of the two joined carts is -0.007924 m/s. What is the mass of the first cart?

kg?

A cart traveling at 8.21 m/s (this movement defines the positive direction) has a head on perfectly inelastic collision with a 8.4 kg cart traveling at -0.59 m/s. The final velocity of the two joined carts is 1.725 m/s. What is the mass of the first cart?

kg?

A cart traveling at 0.17 m/s (this movement defines the positive direction) has a head on perfectly inelastic collision with a 40 kg cart traveling at 0.64 m/s. The final velocity of the two joined carts is 0.4864 m/s. What is the mass of the first cart?

kg?

A cart traveling at 5.19 m/s (this movement defines the positive direction) has a head on perfectly inelastic collision with a 44.7 kg cart traveling at -1.84 m/s. The final velocity of the two joined carts is -0.5338 m/s. What is the mass of the first cart?

kg?

A cart traveling at 0.42 m/s (this movement defines the positive direction) has a head on perfectly inelastic collision with a 30.4 kg cart traveling at 2.96 m/s. The final velocity of the two joined carts is 2.105 m/s. What is the mass of the first cart?

kg?

A cart traveling at 1.28 m/s (this movement defines the positive direction) has a head on perfectly inelastic collision with a 42.5 kg cart traveling at 5.17 m/s. The final velocity of the two joined carts is 3.804 m/s. What is the mass of the first cart?

kg?