How much energy, in joules, is released when 17 kilograms of granite is cooled from 45°c to 21°c?
a. 785,662.8 j
b. 901,980.3 j
c. 365,575.3 j
d. 327,992.8 j

The force will determine the acceleration.

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e