# A toy car starts from rest and accelerates at 1.50 m/s (El for 5.25 s. What is the final velocity, v.of the car? Show your work.?

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- oubaasLv 74 weeks ago
Vf = Vo ± a*Δt

If starting is from rest , then Vo = 0 and a is positive, therefore :

Vf = a*Δ t = 1.5*(5.25-0) = 7.875 m/sec

- 4 weeks ago
If the acceleration is constant at 1.5 m/s^2, then we can use a kinematic equation for constant acceleration:

v = v0 + at = 0 + 1.5 m/s^2 * 5.25 s = 7.88 m/s

The initial velocity being 0 comes from the fact that the car starts from rest.

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