The answer is B because 13 m/s is a greater acceleration than 10 m/s in the same amount of time.
A. Acceleration is the answer to you question. When an object changes velocity it can accelerate.<span />
So the people had to be. This equipment causes space
If 56.5kJ are needed to raise the temp by 90°C and if the heater is 60% efficient that means that:
60% X y = 56.5kJ
where y is the electrical energy in kJ that the heater will use.
y = 94.2kJ