Categorize ALL of the following scenarios/definitions:
Force and displacement in the same direction
Force and displacement in opposite direcions
Force but no displacement
Pushing a grocery cart forward
Brakes using friction to slow down a bike
Holding a plank
Positive Work
Negative Work
Zero Work
A 2kg object is sitting stationary on frictionless ice, and a 35 N force is applied to push it, which results in the object moving 4 meters.
How much work is done?
What is the KE of the object before the push?
What is the KE of the object after the push?
How fast is the object moving after the push?
Fill in the energy diagram: