Question

1. Abdul, while driving to school, computes the average speed for

his trip to be 20 km/h . On his return trip along the same route, there is less traffic and

the average speed is 30 km/h . What is the average speed for Abdul’s trip?

2. Velocity time graph of a body is shown in the figure. What are initial and final

velocities of the body?

3. A train travels the first 15 km at a uniform speed of 30 km/h, the next 75 km at a

uniform speed of 50 km/h and the last 10 km at a uniform speed of 20 km/h. Calculate

the average speed for the entire journey?

4. The distance between Delhi and Agra is 200km.A train travels the first 100km at a

speed of 50km/h. How fast must the train travel the next 100km,so as to average

70km/h for the whole journey?​

Answer 1

Answer:

Explanation:Abdul while driving to school computes the average speed for his trip to be 20 km/h. On his return trip along the same route, there is less traffic and the average speed is 30 km/h. What is the average speed of Abdul's trip? Therefore, the average speed for Abdul's trip is 24 km/h.