A car travels along the same straight highway throughout a journey made up of three…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A car travels along the same straight highway throughout a journey made up of three successive parts.
• Part 1: 40 km driven at a constant speed of 60 km h⁻¹.
• Part 2: 25 km driven at a constant speed of 50 km h⁻¹.
• Part 3: The car then continues eastward for 30 min at a constant speed of 80 km h⁻¹.
(a) Compute the total distance covered and the total time taken for the complete journey.
(b) Calculate the average speed of the car for the entire trip.
(c) Determine the magnitude and direction of the average velocity, taking east as the positive direction.