Question

A bicyclist, initially at rest, begins pedaling and gaining speed steadily for 4.00s during which she covers 34.0m. What was her final speed?

Answer 1

Answer:

17.0 m s^-1

Explanation:

This question can be answered using suvat equations: (I'm assuming you know what these are)

s = 34.0 m

u = 0

v = ?

a = N/A

t = 4.00s

The only suvat equation that doesn't contain "a" is s = (u+v/2)t.

Make "v" the subject so v = 2s/t.

v = (2 x 34.0)/4.00 = 17 m/s