Substitute the values of p and y into the expression -p2 + 2pq -3p2 - 3q2 + pq - q2. Match that value to one of the numbers. 1. p = √3, q = √27
2. p = 2√2, q = -√8
3. p = 0.5, q = 1.5
4. p = -1, q = 2
5. p = 1/4, q = - 2/5
6. p = 1.5, q = –0.5
7. p = -2, q = -2
8. p = 2/5, q = 1/4

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

How is zig zagging a form of acceleration?

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.