13. Action and Reaction
14. action, reaction, equal, opposite
15. pairs
16.
a. The desk seat pushing up on your bottom
b. The baseball pushing back on the bat
c. The phone screen pushing back on your finger
IV.
- First image (box with force): 2nd law
Explanation: The object accelerates in the direction of the net force (F=ma).
- Second image (hammer hitting nail): 3rd law
Explanation: The hammer exerts a force on the nail, and the nail exerts an equal and opposite force on the hammer.
- Third image (person pulling rope): 3rd law
Explanation: As the person pulls on the rope, the rope pulls back on the person with equal force.
- Fourth image (cannon firing): 3rd law
Explanation: The cannon exerts a force on the cannonball forward, and the cannonball exerts an equal and opposite force backward on the cannon, causing recoil.
Parent Tip: Review the logic above to help your child master the concept of newton laws worksheet answers.
