how much gravitational potential energy does a 225 kg roller coaster have when it is at the top of a hill 39 meters above the ground

Alivestock company reports that the mean weight of a group of young steers is 1100 pounds with a standard deviation of 93 pounds. based on the model n(1100,93) for the weights of steers, what percent of steers weigh a) over 1050 pounds? b) under 1300 pounds? c) between 1150 and 1250 pounds?

The force will determine the acceleration.

How does an observation about an object differ from an inference about that object