M A 3.0 kg model train going right at 2.8 bumps into another 2.0 kg model train car moving in the same
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direction at 1.6 . The heavier train car has a final speed of 2.2 to the right.
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What is the final speed of the lighter 2.0 kg train car?

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

Which two particles are found in the center of an atom

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9