B is the answer! Because no one would be pushing the rock all the way down the hill it would just go down by itself by rolling!!
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The apparent velocity is B) 48 m/s north
Explanation:
Here we have a problem of relativity of velocities.
In fact, the train is travelling north at a speed of
where this velocity is measured with respect to the ground.
At the same time, a passenger on the train is walking towards the rear (so, south) at a velocity of
where this velocity is measured with respect to the train, which is in motion in the opposite direction.
Therefore, the apparent velocity of the passenger with respect to an observer standing on the ground is:
And the direction is north, since this number is positive.
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The scientist who used a prism to study light was Isaac Newton
Answer: Well the answer is KE = 5.625E-7 i just don't know the units for it...
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Answer:
it loses engry it follows difernt paths
Explanation: