Momentum Before Collision Momentum After Collision Karen 35 units 10 units
James 20 units ?

This table shows the momentum for Karen, who was running when she bumped into James. After the collision, James' momentum is
A) 10 units.
B) 15 units.
C) 35 units.
D) 45 units.

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?