Newton's Laws, Speed

What is Newtons 1st law of motion?

• Force= Mass multiplied by acceleration 
• An object at rest stays at rest unless acted on an unbalanced force. (inertia)
• For every action there is a equal and opposite  re-action.
• law of gravity 

What law of motion does this picture represent?

• Newtons 3rd law
• Newtons 4th law
• Newtons 1st law
• Newtons 2nd law 

What law of motion does this picture represent?

• Newtons 1st law
• law of gravity 
• Newtons 4th law 
• Newtons 2nd law

What law of motion does this picture represent?

• Newtons 1st law
• Newtons 4th law 
• Newtons 3rd law 
• Newtons 2nd law

A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia? (Force = Mass x Acceleration

• m = 3.0 kg

• m = 4.0 kg

• m = 3.0 ml

• m = 30.0 g

Determine the accelerations that result when a 12-N net force is applied to a 3-kg object. (Force = Mass x Acceleration)

• 3 m/s

• 4 ft/s

• 13 m/s

• 4 m/s

For every action there is a equal and opposite...

• action
• movement 
• re-action 
• Newtons law of inertia 

What Newtons law does this picture represent

• Newtons 2nd law (F= ma)

• Law of gravity

• Newtons 1st law (Law of Inertia)

• Newtons 3th law (Action - Reaction)

Mass is a measure of an object's inertia. Objects with greater mass have a greater inertia; objects with less mass have less inertia.

• true 
• false 

A unbalanced force means that an object is

• zero net force

• changing its velocity

• sitting still

• object at rest