Alfonso, Julia, and Margie were having fun as they rolled some office chairs across a flat floor. All three chairs have
the same mass. Margie gave each of the chairs a push, but not all from the same direction. Each chair changed
speed as a result of being pushed. Use the information in the diagram to answer.
Which chair(s) experienced the strongest force when it was pushed? How do you know?
A. The black chair experienced the strongest force because it takes a stronger force to slow
something down than it takes to speed something up.
B. The blue chair experienced the strongest force because it had the fastest ending speed.
C. All three chairs experienced the same strength force because they changed speed by the same
amount.
D. The pink and blue chairs experienced the strongest forces because they both gained the same
force as they sped up. The black chair lost force, so it slowed down.