Question

A dragster is traveling at a constant rate of 45 m/s. How fast is it going when it has traveled 325 m?

Answer 1

The speed of the dragster after travelling 325 m is still 45 m/s

Explanation:

In this problem, we are told that the dragster is travelling at constant rate, therefore its speed is constant and it is

v = 45 m/s

Therefore, its speed will remain constant during the entire motion: therefore, after having travelled for 325 m, its speed will still be 45 m/s.

We can also calculate the time taken for the dragster to cover the 325 m. In fact, the speed in a uniform motion is given by

$v=\frac{d}{t}$

where:

v is the speed

d is the distance covered

t is the time elapsed

In this case, we have:

v = 45 m/s

d = 325 m

Solving for t, we find:

$t=\frac{d}{v}=\frac{325}{45}=7.2 s$

Learn more about speed:

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