Forces and Motion

Which is true from Newton's Third law of motion?

• For every action force there is a smaller reaction force in the opposite direction.
• For every action force there is an equivalent reaction force in the opposite direction.
•  Both 1 and 2
• None of the above

Tags

NGSS.MS-PS2-1

What is Newtons 2nd law?

• equal&opposite force
• law inertia
• f=ma

Tags

NGSS.MS-PS2-2

When forces on an object are balanced, what is the force?

• Five
• Ten
• Six
• Zero

How can you increase the acceleration of an object?

• decrease its mass
• increase its friction
• increase its mass
• decrease the force applied to it

Tags

NGSS.MS-PS2-2

______ measures an object's tendency to resist changing its motion.

• Acceleration
• inertia
• Gravity
• weight

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

Tags

NGSS.MS-PS2-2

Which statement is true about a moving object?
When an object is ....

• ...accelerating, the resultant force acting on it must be zero
• ... moving at a steady speed, the air resistance acting on it must equal zero
• ... moving at a steady speed, the resultant force acting on it must equal zero
• ... moving, there must be a resultant force acting on it.

Tags

NGSS.HS-PS2-1

Two forces act on an object.
In which situation is it IMPOSSIBLE for the object to be in equilibrium?

• The two forces act in the same direction
• The two forces act through the same point
• The two forces are of the same type
• The two forces are the same size

Tags

NGSS.HS-PS2-1

As the angle of the incline increases, what happens to the normal force?

• The normal force increases

• The normal force decreases

• The normal force is not affected by the incline

• The normal force is only dependent on the force due to gravity

Tags

NGSS.HS-PS2-1

A car travels up a hill at constant speed. Which of the following diagrams best represents the forces acting on the car at this instant?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1