Answer:
B. 2 hours
Explanation:
45 miles an hour times 2 is 90 miles in 2 hours
First we need to write down heat capacity for water which is constant.
cp=4186 J/(kg*K)
The equation for Energy that we will be calculating is:
E=cp*m*T
where m is mass and T is absolute temperature (273,15 + 60 in this case). Replacing all the values in equation we get:
E = 4186*100*333,15 = 139 456 590 J
'A' and 'C' both show that behavior.
'D' also shows it, but the object is moving backwards when time begins.
First it moves faster and faster backwards, then it moves slower and slower backwards.
Explanation:
It varies with altitude, but at sea level, it's 9.8 m/s².
It is the last number minus 3