Newtons Laws HMWK1

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

What is Newton's First Law known as? The Law of

• Friction
• Mass
• Inertia
• Gravity

An object in motion will stay in what kind of motion as long as the net forces acting on it are zero?

• slowing motion in a straight line
• accelerating motion in a straight line
• constant motion in a straight line
• constant motion in an unpredictable direction

Which of Newtons laws explains why football teams have big, large, fast athletes.

• Frist and second
• second law
• first law
• Third law

Keep in mind F=MA
If you are pushing a 1000 kg car at 0.5 m/s2, how many newtons would that be? 

• 2000 N
• 60N
• 500 N
• 12 N

F=MA 
Going down a hill a 12 kg sled has a force of 36 N. What is it's acceleration? 

• 2 m/s2
• 3 m/s2
• I don't know
• What?

Newton's Third Law?

• For every action, there is an opposite and equal reaction
• The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
• Don't know
• What?

A force of 20 N acts upon a 5 kg block. What is it's acceleration 

• 4 m/s2
• 100 m/s2
• 10 m/s2
• 5 m/s2

F=Ma
An object of mass 300 kg is observed to accelerate at the rate of 4 m/s².  Calculate the force required to produce this acceleration. 

• 120 N
• 12 N
• 1200 N
• 2 N

20 N is the

• mass
• weight
• force
• acceleration