Question

Solves the word problems –



i. Convert 54 km/hr. into m/s


ii. Calculate Time-period of a simple pendulum if it takes 72 seconds to complete 24 oscillations.


iii. A train is travelling at a speed of 100 km/hr. How long will it take to complete a journey of 500 km without stopping in between.


iv. Akbar takes 15 minutes to reach market from his house on this cycle. If the speed of his cycle is 4 m/s calculate the distance between his house and market?​

Answer 1

Answer:

I. 1km = 1000 m

54km = 54000 m

1 hr = 60 × 60 sec.

3600 sec

so, it will be 54000m / 3600 sec

II. I don't know

III. I don't know

iv. formula of distance = speed × time

4 × 15

60

Answer 2

Answer:

1km=1000m 54km×1000=54000m and one hr=60sec=60×60=3600sec

so,it is 54000m and 3600sec