A day which in this case is longer than a year
Rate of change of velocity is called acceleration. When this rate of change is constant, it is called uniform acceleration. Like the change of velocity of an object falling freely under gravity. Its velocity increases by 9.8 m every second. This acceleration is denoted as 9.8m/s^2
The answer is <span>a) large force over a long time </span>
PE=mgh=150kg*9.8m/c² *50m=73500 J
W=F*d=mgd = 2.5*9.8*3.0 = 73.7J
W=mgh=68.0*7.62*9.8 =50.78 J
150 lb = 68.0 kg
25 ft = 7.62m
A is the answer: A resistor, which converts some electrical energy to thermal.
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Hope this helps </span>
