Question

ES
22
5.
2. A soldier marches at the speed of 2 m/s.
What distance will he cover in one hour?
3. A car travels at 40 km/h for the first third
of its journey, at 35 km/h for the second
third of its journey and at 42 km/h for the
final third of its journey. What is its average
speed?
4. A bus travels at an average speed of 35 km/h
between two towns that are 245 km apart.
If it stops twice for half-hour breaks on the
An​

Answer 1

Answer:

Hey mate

2.

speed = 2m/s

time = 1hr = 60 minutes = 3600s

distance = speed × time

               = 2 m/s × 3600s

               = 7200 m

3.

First third speed = 40 km/h

Second third speed = 35 km/h

Final third speed = 42 km/h

Average = {(40+35+42)÷3}

=117÷3

=39 km/h

4.

speed of bus = 35km/h

distance = 245km

time taken = 245/35 = 7hrs

time of brakes = 1/2hr.

no of brakes = 2

total time of brakes 1hr

total time to reach the town = (7+1)hr = 8hrs

your answer is 8hrs.