Question1if a race car completes a mi oval track in s what, Ask an Expert

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Question1

If a race car completes a mi oval track in s, what is its average speed? Did the car accelerate? I know what an average speed is, but I require to know if the car accelerated and another question which I don't get at all.

A body moving with uniform acceleration has a velocity of cm/s when its x coordinate is 3.66 cm. If its x coordinate s later is cm, what is x-component of its acceleration?

Question2

A baseball pitcher throws a fastball at a speed of 40 m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 2.9 m. compute the acceleration, assuming that it is constant and uniform.

Question3

A parallel-plate capacitor is charged to an electric potential of 337 V by moving 3.62E+16 electrons from one plate to the other. How much work is completed in charging the capacitor?

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