Answer to Question #313521 in Physics for Riyah

Question

A cyclist accelerates from 0 m/s to 8 m/s in 3 seconds.What is his acceleration?Is this acceleration higher than that of a car which accelerates from 0 to 30 m/s in 8 seconds ?

Answer 1

The acceleration of the car

$$a=\frac{\Delta v}{\Delta t}$$

Hence

$$a_1=\frac{8\:\rm m/s}{3\:\rm s}=2.67\:\rm m/s^2$$

$$a_1=\frac{30\:\rm m/s}{8\:\rm s}=3.75\:\rm m/s^2$$

$$a_1<a_2$$

Answer: No