Question
Asked Oct 4, 2019

 a) 0 s to 20 s

The velocity vs. time graph for an object moving along a straight path is shown in the figure below.
v (m/s)
8
6
2
0
t(s)
20
Ао
15
-2
-4
(i) Find the average acceleration of this object during the following time intervals.
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The velocity vs. time graph for an object moving along a straight path is shown in the figure below. v (m/s) 8 6 2 0 t(s) 20 Ао 15 -2 -4 (i) Find the average acceleration of this object during the following time intervals.

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Expert Answer

Step 1

Given:

v (m/s)
8
2
(s)
20
5
15
-2
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v (m/s) 8 2 (s) 20 5 15 -2

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Step 2

Calculating the average accel...

Average acceleration = Total change in velocity
Total time taken
Initial velocity at t 0s, u -8 m/s
Final velocity at t = 20s, v = 8 m/s
Totak change in velocity 8 m/s - (8 m/s) 16 m/s
Total time taken = 20 s - 0 s 20 s
Total change in velocity 16m/s
0.8 m/s
Average acceleration, ar
avg
Total time taken
20s
help_outline

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Average acceleration = Total change in velocity Total time taken Initial velocity at t 0s, u -8 m/s Final velocity at t = 20s, v = 8 m/s Totak change in velocity 8 m/s - (8 m/s) 16 m/s Total time taken = 20 s - 0 s 20 s Total change in velocity 16m/s 0.8 m/s Average acceleration, ar avg Total time taken 20s

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Physics

Kinematics

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