Newton's Laws

The 1st Law of Motion states _________________________.

• A. that an object at rest can suddenly move without any force being applied

• B. that an object at rest will stay at rest unless acted on by a NON-ZERO (unbalanced) net force

• C. that an object at rest will stay at rest unless acted on by a ZERO (balanced) net force

• D. that a moving object can suddenly stop without any force being applied

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NGSS.MS-PS2-2

Which of the following best describes inertia?

• electromagnetic radiation

• a force that makes objects at rest start to move

• resistance to an object's change in motion

What type of force is present in the following scenario?

A box of books is sitting on a table. Someone comes and slides the box across the table to the other side.

• a zero (balanced) net force

• a magnetic force

• a non-zero (unbalanced) net force

• an electrical force

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How does the mass of an object relate to the object's inertia?

• the more mass an object has, the less inertia it will have

• the less mass an object has, the more inertia it will have

• the more mass an object has, the more inertia it will have

Newton's 2nd Law of Motion defines the relationship between force, mass, and acceleration.

What is the formula for Newton’s 2nd Law of Motion?

• $m=F+a$
  

• $a\ =\ m-F$

• $F\ =\ m\cdot a$

• $F=\frac{m}{a}$

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NGSS.MS-PS2-2

What does the "F" stand for in the equation?

• Friction

• Force

• Fraction

• First

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What unit do scientists use to measure force?

• kilograms

• $\frac{m}{s^2}$ (meters per seconds squared)

  
  

• Newtons

Find the mass of an object with a force of 36N and an acceleration of 12 m/s².

• 3 kg

• 24 kg

• 423 kg

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NGSS.MS-PS2-2

Find the force of an object with a mass of 2 kg and an acceleration of 5 m/s^2.

• 10 N

• 7 N

• 3 N

• 2.5 N

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NGSS.MS-PS2-2

Newton's 3rd Law of Motion states that for every action ____________________.

• there will always be a larger reaction in the same direction

• there is a very small and opposite reaction

• there is an equal and opposite reaction

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