Nestor finished a 42- kilometer bicycle race in 1 hour 45 minutes. What was his average speed In kilometers per hour? Physics 1D Motion Displacement and Velocity 1 Answer Michael · mason m Nov 30, 2015 Answer: #"24 km/hr"# Explanation: Average speed = distance travelled / time taken. You can see that 1 hr 45 mins is 1 and 3/4 of an hour or 1.75hr. So average speed = #42/1.75="24 km/hr"# Related questions What is the difference between distance and displacement? Is displacement directly proportional to velocity? How does average velocity differ from instantaneous velocity? How can I calculate the change of velocity? How do speed and velocity differ from each other? How do velocity and acceleration differ? How do displacement and distance differ? Can displacement be negative? Can velocity be zero if accelerating? Explain why displacement is a vector quantity? See all questions in Displacement and Velocity Impact of this question 456 views around the world You can reuse this answer Creative Commons License