Answer:
Because the output force is greater than the input force, the input distance must be greater than the output distance.
Explanation:
Ans:
C
Explanation:
because it is moving down the stairs
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Answer:
It is equal to the overall momentum before collision, so far no external object is involved.
Explanation:
Momentum is always conserved during collision as a rule. This is equal to the product of the mass and velocity. Thank you.
