For each statement below, indicate which of Newton's Three Laws the statement represents. (5 points)

Newton's 1st Law Newton's 2nd Law Newton's 3rd Law
A ball rolls directly across the floor until Luis gives it a kick.

Both a bowling ball and a tennis ball roll over your foot at identical speeds, but the force of the bowling ball causes much more pain.

Your riding lawn mower stalls, and as your friends push it, the force helps the lawn mower move until it gradually accelerates.

A firefighter turns on a water hose and is pushed backward by the force.

A soccer ball remains stationary until a player kicks it into motion.

1 answer

Here are the statements indicated with the corresponding Newton's Laws:

  1. A ball rolls directly across the floor until Luis gives it a kick.

    • Newton's 1st Law (An object in motion stays in motion unless acted upon by an external force.)
  2. Both a bowling ball and a tennis ball roll over your foot at identical speeds, but the force of the bowling ball causes much more pain.

    • Newton's 2nd Law (Force is equal to mass times acceleration; the bowling ball has more mass, thus it exerts more force on your foot.)
  3. Your riding lawn mower stalls, and as your friends push it, the force helps the lawn mower move until it gradually accelerates.

    • Newton's 2nd Law (The force applied causes the lawn mower to accelerate, illustrating the relationship between force, mass, and acceleration.)
  4. A firefighter turns on a water hose and is pushed backward by the force.

    • Newton's 3rd Law (For every action, there is an equal and opposite reaction; the force of the water being expelled pushes the firefighter backward.)
  5. A soccer ball remains stationary until a player kicks it into motion.

    • Newton's 1st Law (An object at rest stays at rest unless acted upon by an external force.)