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Team 2 :
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10 points

What does a horizontal line on the x axis on a speed vs time graph represent?

motionless

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10 points

What does negative slope represent on a distance vs time graph?

going back to start

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5 points

Define vector.

A quantity that includes both magnitude (size) and direction.

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10 points

What does a curved line represent on a distance vs time graph?

non-constant speed (acceleration)

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25 points

Explain the motion of the object in the graph.

slow constant speed away from start, stopped, slow constant speed away from start, fast constant speed home

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15 points

Which term(s) is(are) scalar: distance, displacement, speed, rate, velocity, acceleration

distance, speed, rate

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10 points

What is the unit for distance?

m (km)

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5 points

What is positive acceleration?

speeding up

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15 points

How quickly an object is moving at a certain time is its...

instantaneous speed

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15 points

What is the unit for velocity?

m/s + direction

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10 points

What is the unit for acceleration?

m/s/s

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15 points

Explain why a car turning a corner at a constant speed of 20 m/s is not traveling at a constant velocity.

Because the direction of the car is changing, velocity is not constant (vector).

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25 points

Draw a graph for a person who walks up a hill at a constant speed, across the top, and down the other side.

See Graph on Board

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5 points

Define scalar.

A quantity that includes only magnitude (size).

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10 points

What does a horizontal line above the x axis represent on a speed vs time graph represent?

constant speed

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15 points

When does an object's velocity change?

speed up, slow down, change direction

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