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.

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1 answer

Sure! Here’s how each statement corresponds to Newton's Three Laws:

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

    • Newton's 1st Law - This law states that an object at rest stays at rest and an object in motion stays in motion unless acted upon by a net 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 - This law explains that the force (pain in this case) is related to mass and acceleration (F=ma). The bowling ball has a greater mass, which results in greater force.
  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 - Again, this involves the relationship of force and mass causing acceleration.
  4. A firefighter turns on a water hose and is pushed backward by the force.

    • Newton's 3rd Law - This law states that for every action, there is an equal and opposite reaction. The action of water being expelled from the hose causes the firefighter to be pushed backward.
  5. A soccer ball remains stationary until a player kicks it into motion.

    • Newton's 1st Law - The soccer ball stays at rest until an external force (the kick) acts upon it.

So, in summary:

  • 1st Law: Statements 1 and 5.
  • 2nd Law: Statements 2 and 3.
  • 3rd Law: Statement 4.