What is the net force and the direction of movement?

• 50 Newtons, Left
• 50 Newtons, Right
• 500 Newtons, RIght
• 450 Newtons, LEft

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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 

Determine the accelerations that result when a 12-N net force is applied to a 3-kg object. 

• 3 m/s
• 4 ft/s 
• 13 m/s
• 4 m/s 

Tags

NGSS.MS-PS2-2

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

An object will not have any inertia if it is __________?

• Accelerating
• Moving in a circle
• In space
• … Nonsense! All objects have inertia

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

To test Newton’s law of gravity, Ben and Jerry climbed the football stadium at school and dropped an egg from the very top of the bleachers. Their egg dropped data can be seen in the table According to this data, What conclusion can the boys make regarding Newton’s law of gravity?

• a)  No conclusion can be drawn from the data
• a)  The acceleration due to gravity is not constant
• a)  The acceleration due to gravity of 9.8 m/s2 is refuted
• a)  The acceleration due to gravity of 9.8 m/s2 is supported

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A force that opposes motion between a surface in contact with the atmosphere.

• air resistance
• gravity
• momentum
• terminal velocity

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

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

Tags

NGSS.MS-PS2-1

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

• action force

• reaction force

• net force

• inertia

Tags

NGSS.MS-PS2-1

When two equal forces act in opposite directions on an object, they are called ______________________.

• frictional force

• balanced force

• centripetal force

• gravitational force