Question

Reviewing Main Ideas
1. Marissa's car accelerates uniformly at a rate of 1269 . How long does
It take for Marisses car to accelerate from a speed of 24.5 m/stos speed
of 25.8 m/s ES 48

Answer 1

Answer: 1.02 s

Explanation:

In this situation the following equation will be useful:

$V=V_{o}+at$

Where:

$V=25.8 m/s$ is Marissa's car  final velocity

$V_{o}=24.5 m/s$ is Marissa's car initial velocity

$a=1.269 m/s^{2}$ is Marissa's car constant acceleration  (assuming this is the acceleration, since 1269 m/s^{2} does not make sense)

$t$ is the time  it takes to accelerato from $V_{o}$ to $V$

Isolating $t$:

$t=\frac{V-V_{o}}{a}$

$t=\frac{25.8 m/s-24.5 m/s}{1.269 m/s^{2}}$

$t=1.02 s$