Question

3. Numerical: [2+2+2]

a. If a car travels 5 km in 30 minutes, calculate the speed of the car in km/h unit.

b. If a train travels 185 km with 45 km/h speed, calculate the time taken by the

train to travel that distance?

c. How far an object will go in 95 s with 12.5 m/s speed?


Give steps and no irrevalent answers...​

Answer 1

Answer:

a. 2.5 km /h b. 246 1/3 min c. 1187.5m

Explanation:

Ok, here are steps :

a. speed = distance/time

30min = 1/2 hour

So, 5/0.5 = 2.5 km/h

b. If s=d/t then, d/s=t

(185/45)- It is an irrational no.

means when didvided it will go

endlessly after a decimal.

So , lets get it in seconds

To do it we will have to multiply it by

3600 as 1hr has 3600 seconds

185/45 ×3600 = 14800 sec or 4 hr 6

min 40 sec.

c. s=d/t Then, s×t=d

So, 95×12.5= 1187.5m or 1.1875km

HOPE IT HELPS YOU :)