Newton's Laws of Motion

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

• the object remains at rest

• the object accelerates in an unpredictable direction

• the object begins accelerates 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

A 20 kg bike accelerates at 10 m/s². what was the force

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

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NGSS.MS-PS2-2

What Unit do we Measure Force in?

• newtons

• joules

• force

• pascals

What is the acceleration of an object traveling at a constant velocity?

• 10 m/s²
• 0 m/s²
• 250 m/s²
• 20 m/s²

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NGSS.HS-PS2-1

What are the appropriate units to describe acceleration?

• m/s
• m/s²
• cm
• there are no units associated with acceleration

How can acceleration be described?

• distance divided by time
• time divided by distance
• force divided by time
• change in velocity divided by time

How can Newton's second law be represented  mathematically? 

• F=MA
• M= F/A
• A= F/M
• All are correct

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NGSS.MS-PS2-2

Acceleration changes and object's...

• speed, direction or both
• speed, gravity or both
• gravity, direction or both
• inertia, speed or both

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

Jenny applies a 60 N force to a 20 Kg cart, what is the acceleration of the cart if friction can be neglected?

• 1200 m/s²

• 0.33 m/s²

• 20 m/s²

• 3 m/s²

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NGSS.MS-PS2-2