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. Ramesh 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:

1: 54 km/hr into m/s = 54 × 5/18 = 15m/s

2 : Time Period = Time taken/ No. of oscillations

= 72/24 = 3

3 : speed 100km/hr

Distance = 500km

Total Time = Distance/Speed = 500/100 = 5 hours

4 : Speed = 15 m/s

Total time = 15 min = (15×60) 900 seconds.

Distance = Speed × Time

(900 × 15)s 13500 metres = 13.5 Kilometers (Answer)

Step-by-step explanation:

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Answer 2

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