Question

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15. A racing car initially at rest, attains a speed of 198 km/h in 10 s. Calculate the acceleration ​

Answer 1

Answer:

$5.5 m/s^{2}$

Step-by-step explanation:

Initial velocity (u) = 0m/s

Final velocity (v) = 198 km/h = 198×5/18 m/s = 55m/s

Time (t) = 10s

∴ Acceleration (a) = (v - u)/t

$=\frac{55-0}{10} m/s^{2}$

$=5.5 m/s^{2}$