On which body would a 100 kg man have the least gravitational potential energy when lifted to a height of 3 meters
a. mercury
b. earth
c. pluto
d. neptune

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

Which of the following is another term for a planned economy

Cho is making a bar graph showing the amount of money spent on health care between 1999 and 2005. the dependent variable is the: a: money spent b: year c: number of patients