Question

A cyclist accelerates at a rate of 6.6m/s/s. How long will it take the cyclist to reach a speed of 14m/s from rest?

Answer 1

Answer on Question#55101 – Physics – Mechanics | Relativity

Question

A cyclist accelerates at a rate of $6.6\frac{m}{s^2}$. How long will it take the cyclist to reach a speed of $14\frac{m}{s}$ from rest?

Solution

Write down relevant formula:

$$V = a t + V _ {0},$$

where $t - time, V - speed$ at time $t, a - acceleration, V_0 - initial speed$.

Factor out $t$:

$$t = \frac {V - V _ {0}}{a}$$

Plug in numbers:

$$t = \frac {14 - 0}{6.6} = \frac {14}{6.6} \approx 2.1 (s)$$

https://www.AssignmentExpert.com