v, (km/h) 60 50 40 E 30 20 10 E t (3) 5 10 15 20 25 30 35 40
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Question
Figure shows the velocity of a solar-powered car as a
function of time. The driver accelerates from a stop sign, cruises for
20 s at a constant speed of 60 km / h, and then brakes to come to a stop
40 s after leaving the stop sign. (a) Compute the average acceleration
during these time intervals: (i) t = 0 to t = 10 s; (ii) t = 30 s to
t = 40 s; (iii) t = 10 s to t = 30 s; (iv) t = 0 to t = 40 s. (b) What is
the instantaneous acceleration at t = 20 s and at t = 35 s ?
Transcribed Image Text:v, (km/h)
60
50
40 E
30
20
10 E
t (3)
5 10 15 20 25 30 35 40
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