A book is resting on the table. Forces are exerted _____.
upward by the table
downward by the book
in equal and opposite directions
all of the above

Tyler throws a baseball, which accidentally breaks a window in his neighbor's house. Which of the following represents the action force?
The window breaking.
The baseball accelerating.
Tyler's arm throwing the ball.


A 50 kg wagon is pulled with a 100 N force. If the force is increased to 200 N, how quickly will the wagon accelerate?
1 m/s2
2 m/s2
4 m/s2
25 m/s2