newton's law MIDTERM

Name the missing force...

• Frictional force
• Weight force
• Thrust
• Normal force

If these teams are pulling with the same amount of force what will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

"An object in motion (or at rest) will to stay in motion (or at rest) until an outside force acts upon it."

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

An archer pulls the bowstring back, then releases the string and the arrow flies forward. The arrow flying forward is the...

• action force
• reaction force
• net force
• inertia

The force that opposes motion between two surfaces in contact with each other.

• inertia
• friction
• momentum
• gravity

A Newton is a unit of...

• force
• inertia
• acceleration
• velocity

This example can be applied to which law?

• Newton's 1st law

• Newton's 2nd law

• Newton's 3rd law

• Law of conservation of momentum

"For every action, there is an equal and opposite reaction."

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

The combination of all the forces acting on an object is the...

• net force
• action force
• reaction force
• balance force

A construction worker pushes on a large rocks with it mass 500 kg (show in the picture). Once he gets the rock moving, the rock begin accelerate at 0.25 m/sec2 to the left. If the Construction worker is able to apply 200 N of force, what is the frictional force between the rock and the ground?

• 75 N to the right

• 75 N to the left

• 100 N to the right

• 100 N to the left