Question

what are the known variables in the following problem? justin tyme accelerates his race car uniformly from 20.0 m/s to 50.0 m/s in 3.00 seconds. determine the acceleration of the car (check all that apply). v0x vfx ax δt δx

Explanation:

• \(v_{0x}\) represents the initial velocity. Here, the initial velocity of the car is \(20.0\ m/s\), so \(v_{0x}\) is a known variable.
• \(v_{fx}\) represents the final velocity. The final velocity of the car is \(50.0\ m/s\), so \(v_{fx}\) is a known variable.
• \(\Delta t\) represents the time interval. The time taken is \(3.00\) seconds, so \(\Delta t\) is a known variable.
• \(a_{x}\) (acceleration) is the quantity we need to find, so it is not a known variable.
• \(\Delta x\) (displacement) is not given in the problem statement, so it is not a known variable.

Answer:

• \(v_{0x}\)
• \(v_{fx}\)
• \(\Delta t\)