Force, Mass and Motion

Determine the accelerations that result when a 12-N net force is applied to a 3-kg object and then to a 6-kg object.

• A 3-kg object experiences an acceleration of 2 m/s/s. A 6-kg object experiences an acceleration of 2m/s/s.  

• A 3-kg object experiences an acceleration of 4 m/s/s. A 6-kg object experiences an acceleration of 2 m/s/s.  

• A 3-kg object experiences an acceleration of 2 m/s/s. A 6-kg object experiences an acceleration of 4 m/s/s.  

• A 3-kg object experiences an acceleration of 4 m/s/s. A 6-kg object experiences an acceleration of 4 m/s/s.  

Tags

NGSS.MS-PS2-2

What is a force?

• force is a push or pull.

• force is anything that acting on another object.

• force can be balanced or unbalanced.

• all of the above

Tags

NGSS.MS-PS2-1

You give a shopping cart a shove down the isle. The cart is full of groceries and has a mass of 18 kg. The cart accelerates at a rate of 3 m/s². How much force did you exert on the cart?

• 6N

• 54N

• 21N

• 18N

Tags

NGSS.MS-PS2-2

How much force is needed to accelerate a 25kg bowling ball at 2m/s². 

• 50N

• 5N

• 12.5N

• 100N

Tags

NGSS.MS-PS2-2

If a 2kg bird is pushed by the wind with a force of 2N, how fast does the bird accelerate?

• m

• m/s²

• 4m/s²

• m/s²

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Newton's law of motion describes the relationship of force, mass, and acceleration. Write the equation.

• M=F/A

• F=MA

• A= F/M

• All of the above

The unbalanced force acting on an object equals the object's mass times its acceleration is which law...?

• First Law

• Second Law

• Third Law

• Murphy's Law

Tags

NGSS.MS-PS2-2

Newtons 1st law of motion states:

• An object in motion will stay in motion and an object in rest will stay in rest unless acted upon by and unbalance force.

• For every action there is an equal and opposite reaction. 

• Acceleration is produced when a force. acts on a mass. 

• The greater the mass  the greater the amount of force needed to change its motion. 

A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec².  What is the mass of the object?

• 100kg 

• 1,250kg

• 50kg

• 5kg

Tags

NGSS.MS-PS2-2

The classes are playing tug of war. Barsoum’s room pulls to the left with a force of 45 N. Coach Camacho's room pulls to the right with a force of 50 N. What is the net force? And who won?

• 5N right. Coach Comacho's Class won.

• 5N Left. Barson's class won. 

• 95N and Coach Comacho's class won. 

• 95N and Barson's class won.

Tags

NGSS.MS-PS2-2