- #1
Grace204
- 14
- 1
Homework Statement
Drag racing usually involves two cars racing each other over a set distance. Although distances range from 200 m to 1 km, the 400.0 m drag race is the most popular. This race tests a vehicle's acceleration and top speed.
Data collected on a race by a dragster-
Distance (m) | 20.0 | 400.0 |
Time (s) | 0.945| 8.96 |
The acceleration of the dragster, from the 20.0 m mark to the 400.0 m mark, is?
Homework Equations
v= d/t
a= (Vf - Vi)/ t
The Attempt at a Solution
Vi= d/t
= 20.0m/0.945s
= 21.16m/s
Vf= d/t
= 400.0m/8.96s
= 44.64 m/s
a = (Vf- Vi)/t
= (44.64 - 21.16)/ (8.96 - 0.945)
= 2.93 m/s2
I know that this isn't right because the answer is supposed to be 1.27 m/s2. But I can't figure out how to solve it to get this answer. If anyone could tell me if I'm using the wrong formula or doing something wrong that would be great.