Question

Il Solve the word problems
1.Convert 54 km/hr into m/s.
2.Calculate Time-period of a simple pendulum if it takes 72 seconds to
complete 24 oscillations.(Time period of the pendulum Time taken/Number of
Oscillations)
3.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?
4.Ramesh takes 15 minutes to reach market from his house on this cycle. If the
speed of his cycle is 4 mis.Calculate the distance between his house and
market​

Answer 1

Answer:

1. 1 kilometer is equal to 1000 meters. 1 Hour is equal to 60 minutes. 1 minute is equal to 60 seconds. Hence, 54 km/h is equal to 15 m/s

2. The time period of a simple pendulum if it takes 72 seconds to complete 24 oscillation will be 3 seconds

3.given in photo

4.answer:3.6km

speed=4m/s

time=15min=15x60=900sec

distance=speed*time

=900x4

=3600m

=3.6km

Answer 2

Answer:

1. 1 kilometer is equal to 1000 meters. 1 Hour is equal to 60 minutes. 1 minute is equal to 60 seconds. Hence, 54 km/h is equal to 15 m/s

2. The time period of a simple pendulum if it takes 72 seconds to complete 24 oscillation will be 3 seconds

3.given in photo

4.answer:3.6km

speed=4m/s

time=15min=15x60=900sec

distance=speed*time

=900x4

=3600m

=3.6km