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1. A drag racer begins at rest and has constant acceleration over a 0.60 km track...

1. A drag racer begins at rest and has constant acceleration over a 0.60 km track in 7.50 s. What is the drag racer's final velocity?

2. Two objects of the same mass move along the same line in opposite directions. The rest mass is moving with speed v. The objects collide, stick together, and move with speed 0.150v in the direction of the velocity of the rest mass before the collision. What was the speed of the second mass before the collision?

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