Answer:
Work = Force × Distance
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hope this helps :)
Answer:
1÷60 h
time equals distance upon speed
The amount of energy needed to increase the temperature of a substance by

is given by

where
m is the mass of the substance

is its specific heat capacity

is the increase in temperature
The water volume is

, since its density is

, the mass of this sample of water is

The water specific heat capacity is

and the increase in temperature is

Therefore, the amount of energy needed is
The net force is 12 N to the left.
Answer:
Inelastic collisions actually do conserve energy, but the loss of energy to heat and mechanical vibration is hard to calculate so the math equating energy before and energy after is hard to balance.