8.6A Review Calculating Newtons Second Law

Acceleration of an object happens when things ________

• slow down
• go faster
• change direction (turn)
• All of the above

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What is a force?

• A set speed
• A push or pull on an object
• A speed with direction

How much force is needed to accelerate a 3kg skateboard at 5m/s^2. 

• 8N
• 1.6N
• 0.6N
• 15N

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NGSS.MS-PS2-2

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

• 50N
• 5N
• 12.5N
• 100N

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

• 1 m
• 2 m/s²
• 4m/s²
• 1 m/s²

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Forces that have a net force of zero ( the object is still).

• Balanced force
• Unbalanced force

The sum of all forces acting on an object and direction

• Contact Force
• Balanced Force
• Unbalanced Force
• Net Force

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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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What is the formula for force?

• F=M/A
• F=A/M
• F=M*A
• F=M*F

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What is a force that works AGAINST MOTION?

• Force
• Motion
• Gravity
• Friction

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