Question

6.
The S.I. unit of speed is-
km/minute
m/minute
km/hour
✓ m
m/second
D. Answer the following questions in brief.
1. A boy walks to his school with a constant speed of 4 km/h and reaches there in
30 minutes. Find the distance of the school from his house.
2
The distance between two stations is 216 km. A bus takes 4 hours to cover this
distance. Calculate the average speed of the bus in km/hour
3.
Two Cars, A and B, (starting at the same time, from the same point) are moving
with average speeds of 40 km/h and 50 km/h, respectively, in the same direction
Find how far will Car B be from Car A after 3 hours.
4. A car moves with a speed of 40 km/h for 15 minutes and then with a speed of
60 km/h for the next 15 minutes. Find the total distance covered by the car in
these 30 minutes,
5. Define the term 'Periodic motion. Give two examples of periodic motions that
can be used to measure time.​

Answer 1

Answer:

omg.....it's too long

Answer 2

this is the answer . sorry I can't answer all questions as I can upload only 1 pick at a time . but this answer will help you to find others answer also