Force and Motion

What is the net force?

• 40 N left

• 0 N Balalnced

• 400 N right

• 40 N right

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NGSS.MS-PS2-1

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Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?

• Balanced

• Unbalanced

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NGSS.MS-PS2-1

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If the car in the diagram rolls faster and faster as it moves down the ramp, you can be sure that

• there is no friction acting on the object.

• the forces acting on it are unbalanced.

• the net force on the car is 0 N.

• only gravity is acting on the car.

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NGSS.MS-PS2-2

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NGSS.MS-PS3-5

What is the net force?

• 10 N

• 0 N

• 25 N

• 1 N

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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. 

What is Newton's Third Law?

• Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force

• Force = mass x acceleration

• For every action there is an equal and opposite reaction

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NGSS.MS-PS2-1

According to Newton's second law, if you increase the force applied to an object :

• it accelerates more

• it doesn't move

• you get more inertia

• it decelerates

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NGSS.MS-PS2-2

To calculate Force

• _{Force = m x a}

• Force _{= m ÷ a}

• Force _{= a ÷ m}

• Force _{= m + a}

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NGSS.MS-PS2-2

To calculate m

• m = Force × a

• m = Force ÷ a

• m = Force + a

• m = a ÷ Force

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NGSS.MS-PS2-2

To calculate a

• a = Force × m

• a = Force ÷ m

• a = Force + m

• a = m ÷ Force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2