Answer to Question #155945 in Physics for Ron

Question

What is the acceleration of a car (km/hr²) that goes from 40 km/hr to 80 km/hr in 0.3 hrs

Answer 1

By the definition of acceleration, we have:

$$a=\dfrac{v-v_0}{t},$$ $$a=\dfrac{80\ \dfrac{km}{hr}-40\ \dfrac{km}{hr}}{0.3\ hr}=133.3\ \dfrac{km}{hr^2}.$$

Answer:

$a=133.3\ \dfrac{km}{hr^2}.$