In a motion experiment with a car on a track, the car moves 50 centimeters away from the origin, then moves 20 centimeters towards the origin. What

is the car's displacement and distance traveled? *

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

The softest and hardest minerals are: softest hardest

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9