Solution 5 on Equations of uniformly accelerated motion in 1D
Answer=C
- Initial velocity (u) = 0, since the car was at rest.
- Acceleration (a) = 7.5 m/s2
- Time (t) = 10 s
Using the acceleration formula,
$\overrightarrow{a}=\frac{V_{f}-V_{i}}{t}$
v = u + at
v = 0 + 7.5 × 10 = 75 m/s.
The velocity of the car is 75 m/s.