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On a frictionless toy race track, a 0.035 kg toy car moving right at 0.30 collides with another 0.040 kg toy
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car moving left at 0.20 After the collision, the 0.035 kg car moves left at 0.20
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What is the final speed of the 0.040 kg toy car?

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

What is the main difference between the atmospheres of jupiter and neptune? a. neptune does not have hydrogen and helium. b. jupiter does not have hydrogen and helium. c. jupiter has methane clouds. d. neptune has methane clouds.