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2010304050t (s)x (m)20Of

Question

The position of a rabbit along a straight tunnel as a function of time is plotted in the figure.

What is its instantaneous velocity at t=10.0s?

What is its instantaneous velocity at t=30.0s?

What is its average velocity between t=0 and t=5.0s?

What is its average velocity between t=25.0s and t=30.0s?

What is its average velocity between t=40.0s and t=50.0s?

20
10
30
40
50
t (s)
x (m)
20
Of
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20 10 30 40 50 t (s) x (m) 20 Of

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check_circleAnswer
Step 1

Instantaneous velocity is the velocity of an object in motion at a specific point in time.

 

Instantaneous speed is the slope of displacement curve.

 

For t=10s

3m
10s
0.3m/s
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3m 10s 0.3m/s

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Step 2

Draw a tangent line at t=30s and find its slope to get the velocity

20
x10
10
40
30
t(s)
50
20
(w)X
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20 x10 10 40 30 t(s) 50 20 (w)X

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Step 3

The tangent end co-ordinates a...

30m-10m
V
39s-24s
-1.33 m/s
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30m-10m V 39s-24s -1.33 m/s

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