A car is waiting at an intersection. The traffic light turnsgreen, and with some delay...

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A car is waiting at an intersection. The traffic light turnsgreen, and with some delay...

A car is waiting at an intersection. The traffic light turns green, and with some delay the driver steps on the accelerator pedal. The acceleration of the car as a function of time is shown in the figure.

8.0 7.5 7.0 6.5 6.0 5. 5 5.0 4.5 4.0 r 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 1 2 3 4 5 6 7 8 9 10 11 12 t (s)

What is the final velocity of the car once it is done accelerating?

science physics

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Answer 1

Answer #1

It is to be observed from the graph that under the acceleration-time curve will give final velocity

v= integral of accelration * time

i,e area under the curve is

A = A1+ A2+ A3

A= (1/2) (4-1) (5.5-0) + (6-4)(5.5-0) + 1/2 (10-6) (5.5-0)

A= 5.5 (3/2+2+4/2)

A = 30.25 m/s

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Answer 2

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