The following diagram shows the motion of a person along a straight horizontal path which is divided into two stages: C + AB = 20m v = constant a = 0.4m/s2 t = 10s In Stage 1 (AB), the person starts from rest and accelerates by a constant rate of 0.4 m/s² over a distance of 20m. In stage 2 (BC), the person moves at constant velocity v for 10s. The average velocity of this person during the whole trip is: 3 m/s 4 m/s 8 m/s 2 m/s
The following diagram shows the motion of a person along a straight horizontal path which is divided into two stages: C + AB = 20m v = constant a = 0.4m/s2 t = 10s In Stage 1 (AB), the person starts from rest and accelerates by a constant rate of 0.4 m/s² over a distance of 20m. In stage 2 (BC), the person moves at constant velocity v for 10s. The average velocity of this person during the whole trip is: 3 m/s 4 m/s 8 m/s 2 m/s
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Transcribed Image Text:The following diagram shows the motion of a person along a straight horizontal path
which is divided into two stages:
C
+
+
+
AB = 20m
v = constant
a = 0.4m/s?
t = 10s
In Stage 1 (AB), the person starts from rest and accelerates by a constant rate of 0.4 m/s²
over a distance of 20m. In stage 2 (BC), the person moves at constant velocity v for 10s.
The average velocity of this person during the whole trip is:
3 m/s
4 m/s
8 m/s
2 m/s
5 m/s
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