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26 Nov 2019
A car is stopped at a traffic light. It then travels along astraight road so that its distance from the light is given by x(t)= bt2 - ct3, where b = 2.80 m/s2 and c = 0.150 m/s3.
(a) Calculate the average velocity of the car for the time intervalt = 0 to t = 10.0 s.
(b) Calculate the instantaneous velocity of the car at thefollowing times:
t = 0/t = 5.0 s and 10.0 s (m/s)
(c) How long after starting from rest is the car again at rest? (inseconds)
A car is stopped at a traffic light. It then travels along astraight road so that its distance from the light is given by x(t)= bt2 - ct3, where b = 2.80 m/s2 and c = 0.150 m/s3.
(a) Calculate the average velocity of the car for the time intervalt = 0 to t = 10.0 s.
(b) Calculate the instantaneous velocity of the car at thefollowing times:
t = 0/t = 5.0 s and 10.0 s (m/s)
(c) How long after starting from rest is the car again at rest? (inseconds)
27 Jun 2023
