figure 2 shows a 20 kg block and a 15 kg block suspended by a light rope through a
pulley that has a radius of 10 cm and a mass of 5.0 kg. the pulley rotates without
friction. the 20 kg block moves downward from rest. determine the
a) angular acceleration of the pulley

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?