Based on Figure 3, 20 * 10 10 20 30 40 1 (s) (a) during what time periods, if any, is the velocity constant? (b) At what time is the velocity greatest? (c) At what time, if any, is the velocity zero? (d) Does the object move in one direction or in both directions during the time shown? 50 (u) x 3.

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Chapter1: Units, Trigonometry. And Vectors
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3.
Based on Figure 3,
20
* 10
10
20
30
40
50
t (s)
(a) during what time periods, if any, is the velocity constant?
(b) At what time is the velocity greatest?
(c) At what time, if any, is the velocity zero?
(d) Does the object move in one direction or in both directions during the time shown?
4.
A certain type of automobile can accelerate approximately as shown in the velocity-time graph of
Figure 4. (The short flat spots in the curve represent shifting of the gears.)
50
5th gear
4th gear
40
3rd gear
30
* 20
2nd gear
10
1st gear
t(:
10
20
30
40
i. Estimate the average acceleration of the car in second gear and in fourth gear.
ii. What is its average acceleration through the first four gears?
iii. Estimate how far the car traveled while in fourth gear.
(s/u) a
(u) x
Transcribed Image Text:3. Based on Figure 3, 20 * 10 10 20 30 40 50 t (s) (a) during what time periods, if any, is the velocity constant? (b) At what time is the velocity greatest? (c) At what time, if any, is the velocity zero? (d) Does the object move in one direction or in both directions during the time shown? 4. A certain type of automobile can accelerate approximately as shown in the velocity-time graph of Figure 4. (The short flat spots in the curve represent shifting of the gears.) 50 5th gear 4th gear 40 3rd gear 30 * 20 2nd gear 10 1st gear t(: 10 20 30 40 i. Estimate the average acceleration of the car in second gear and in fourth gear. ii. What is its average acceleration through the first four gears? iii. Estimate how far the car traveled while in fourth gear. (s/u) a (u) x
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