An 800 kg car moving at 4 m/sec to the right strikes a 400 kg car moving to the left. If the cars stick together and stop moving right after the collision, what was the velocity of the 400 kg car?
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It was stationary |
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2 m/sec to the left |
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8 m/sec to the left |
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4 m/sec to the left |

An 800 kg car moving at 4 m/sec to the right strikes a 400 kg car...
A 1570 kg car moving south at 10.6 m/s collides with a 2640 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.60 m/s to the north. Find the velocity of the 2640 kg car before the collision. Assume that North is positive.
a 1490 kg car moving east at 17.0 m/s collides with a 1820kg car moving south at 15.0 m/s, and the two cars comnect together. What is the magnitude of the velocity of the cars right after the collision? what is the direction after collision? How much kinetic energy was converted to another form during the collision?
A bumper car with mass m1 = 107 kg is moving to the
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1) What is the velocity of the center of mass of the system?
m/s
2) What is the initial velocity of car 1...
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A 3 kg object moves to the right at 4 m/sec. It collides head-on with a 6 kg object moving to the left at 2 m/sec. If the collision is elastic, find the velocity (speed and direction) of each object after the collision?
A 2,000 kg car traveling north at a velocity of 45m/s strikes 2,200 Kg car traveling west at 50 m/s. The two vehicles strike each other and stick together. As a single combined mass they slide across the pavement which has a coefficient of kinetic friction 0.07. What is the displacement from the point of impact to the final resting place of the cars? (How long does it take for them to come to rest?) A 200 Kg ball is...