Average Velocity and Speed (HSC SSCE Mathematics Advanced): Quizzes

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Average Velocity and Speed
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In one-dimensional motion, what does displacement (xx) represent?

The object's position at a given time

Unless stated otherwise, what time values are considered in motion problems?

Only non-negative values (t0t \geq 0)

For x=5t(8t)x = 5t(8 - t), what is the maximum height reached by the ball?

8080 metres

What does a displacement-time graph show?

How position changes over time

What is the average velocity from t=4t=4 to t=8t=8 for x=5t(8t)x=5t(8-t)?

20-20 m/s

On a displacement-time graph, what does average velocity equal?

Gradient of the chord

How does change in displacement differ from distance travelled?

Displacement ignores the path taken

What values can distance travelled have?

Only positive or zero

For the complete 88-second flight, what is the ball's average speed?

2020 m/s

What is the key distinction between velocity and speed?

Velocity has direction, speed does not

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