Question

2. A train travels a distance of 300 km with an
average speed of 60 km hl. How much time
ou Reji) does it take to cover the distance ?
3. A boy travels with an average speed of 10 m s-1
for 20 min. How much distance does he travel ?

5A. A boy walks a distance of 30 m in 1 minute and
another 30 m in 1.5 minute. Describe the type
of motion of the boy and find his average speed
in ms-

5. A cyclist travels a distance of 1 km in the first
per hour, 0.5 km in the second hour and 0.3 km in
the third hour. Find the average speed of the
cyclist in (i) km h-1, (ii) m s-1.
​

Answer 1

Answer:

2 - time taken = distance ÷ speed

= 300 ÷ 60 = 50 hours

3 - distance = speed ×time

speed = 10 m/s

time = 20×60= 1200s

hence distance = 10 × 1200 = 12000m =12km

Answer 2

Step-by-step explanation:

5A.

given

Total distance = 60 m

Total time = 2.5min=150 sec

distance = speed x time

average speed = distance/ time

average speed=60/150=0.4ms-

5.given

Total distance =1+0.5+0.3=1.8km=1800m

Total duration = 3hrs =10800sec

in km/hr-

speed =1.8km/3hrs=0.6km/hr

in m/s-

speed = 1800/10800=0.166666

=0.17m/s