Newton's Second Law

What happens when unbalanced forces act on an object at rest?

• the object remains at rest

• the object begins moving in an unpredictable direction

• the object begins moving in the direction of the net force

• the object begins moving opposite to the direction of net force

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Will it take more force to push an empty shopping cart or a shopping cart that is full?

• The empty shopping cart

• The full shopping cart

• They will take the same amount of force

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NGSS.MS-PS2-2

How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s?

• 36 N

• 12 N

• 3 N

• 0.33 N

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NGSS.MS-PS2-2

Why would one ball accelerate more than the other when pushed with the same amount of force?

• Different weights

• Different forces

• Different masses

• Different sizes

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NGSS.MS-PS2-2

Newton's Second Law is also known as the Law of ​ ​ (a)  

• Acceleration

• Action/Reaction

• Inertia

• Momentum

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NGSS.MS-PS2-2

Newton's ​ (a)   Law states that Force is equal to the Mass times the Acceleration (f = ma).

• First

• Second

• Third

Newton's 2nd Law is often written as an equation, ​ (a)   or ​ (b)   is equal to ​ (c)   times ​ (d)   .

• Force

• mass

• acceleration

• Inertia

• Velocity

• Momentum

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NGSS.MS-PS2-2

What is the force acting on the car?

Mathematical Equivalence

ON

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NGSS.MS-PS2-2

Net force = ​ (a)   * ​ (b)  

• mass

• acceleration

• velocity

• net force

• weight

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NGSS.MS-PS2-2

F = ?

m = 5 kg

a = 3 m/s²

Mathematical Equivalence

ON

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NGSS.MS-PS2-2