## Emineyy Group Title A dragster travels 1/4 mi in 6.7 s. Assuming that acceleration is constant and the dragster is initially at rest, what is its velocity when it crosses the finish line? Please show step by step... one year ago one year ago

1. campbell_st Group Title

so use $average ..speed = \frac{distance..travelled}{time..taken}$

2. Emineyy Group Title

I tried but my answer was wrong.) I got 267 mi/h??

3. campbell_st Group Title

did you try feet/sec..?

4. campbell_st Group Title

5. campbell_st Group Title

1/4 mile = 5280/4 = 1320 ft avg speed 1320/6.7 = ...

6. campbell_st Group Title

even using 0.25/6.7 will give miles/sec then multiply by 60 to get miles/min then multiply by 60 to get miles/hr

7. Emineyy Group Title

the answer is given it's 269 mi/h ???

8. campbell_st Group Title

wow...