A bus travels along a straight road in three successive stages of motion.
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A bus travels along a straight road in three successive stages of motion.
(a) First, it accelerates uniformly from 15m/s to 25m/s in a time interval t1. Next, it maintains the speed of 25m/s for 60s. Finally, it comes to rest with uniform retardation in the same time interval t1 as in the acceleration phase. The total distance covered in the entire journey is 2000m. Calculate the value of t1.
(b) Determine the magnitude of the acceleration of the bus during the first stage.
(c) Find the total time taken for the complete journey described above.