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?

In the first law of thermodynamics, triangle e=q-w, what does q stand for

How can you increase the strength of an electromagnet?

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s