Rahul completes a short fitness routine consisting of two stages
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Rahul completes a short fitness routine consisting of two stages.
• Stage A: He sprints 120m in 20s.
• Stage B: He then walks 300m in 5min.
Answer the following.
(i) Calculate Rahul’s speed during Stage A and express it in km/h.
(ii) Convert his walking speed during Stage B to m/s.
(iii) Find the total distance covered and the total time taken (express the time in seconds).
(iv) Determine Rahul’s average speed for the entire routine. Give the answer in both m/s and km/h, rounded to two significant figures.