Dragsters can actually reach a top speed of 145m/s in only 4.45 s—considerably less time than given in Example 2.10 and Example 2.11.

(a) Calculate the average acceleration for such a dragster.

(b) Find the final velocity of this dragster starting from rest and accelerating at the rate found in (a) for 402 m (a quarter mile) without using any information on time.

(c) Why is the final velocity greater than that used to find the average acceleration?

Data given in Example 2.10

Dragsters can achieve average accelerations of 26.0 m/s². Suppose such a dragster accelerates from rest at this rate for 5.56 s. How far does it travel in this time?

Strategy
Draw a sketch.

Data given in Example 2.11

Calculate the final velocity of the dragster in Example 2.10 without using information about time.

Strategy
Draw a sketch.

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