Benchmark 3 topic #2: Forces

What is a force?

• the PUSH or PULL on an object 
• The MOTION an object creates
• The objects HITTING one another
• Going REALLY FAST

Is the amount of matter in an object

• mass

• weight

For every action there is an equal and opposite reaction

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Newton's 4th Law of Motion

Stated mathematically as: F=ma

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Newton's 4th Law of Motion

Also known as the law of inertia

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Newton's 4th Law of Motion

A 50kg cart will accelerate at 4 m/s² when pushed with a force of 200N. This relationship demonstrates which of Newton's Laws of Motion?

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Newton's 4th Law of Motion

Which of Newton's laws does this image most closely demonstrate?

• Newton's 1st Law of Motion

• Newton's 2nd Law of Motion

• Newton's 3rd Law of Motion

• Newton's 4th Law of Motion

According to Newton's 2nd law of motion, what two things determine how much a soccer ball will accelerate when kicked horizontally along the ground?

• The mass of the soccer ball and gravity.

• The mass of the soccer ball and the force applied to it.

• The force of gravity and the size of the kicker's foot.

• The size of the kicker's foot and the mass of the soccer ball.

The ______________ is the sum of all forces acting on an object.

• Balanced force

• Unbalanced force

• Net Force

• Summary Force

What would be the net force and direction of movement (if any) for the diagram above?

• Net force = 180 N

  No movement

• Net force = 0 N

  No movement

• Net force = 180 N

  Movement downward due to gravity

• Net force = 140 N

  Movement to the right