Question

At 9:am the odometer reading was 6573210.0km.At 9:30 am the odometer reads 657320.0km. Calculate the speed of the vehicle in kilometers per hour.

If a simple pendulum oscillates for 40 minutes in 50 seconds ,then what is its time period?

Answer 1

speed = (final odometer reading - initial odometer reeding)/time
= (657320.0 - 6573210) / (0.5) km/hr
= 10/0.5 = 20 km/hr

time period = time taken / number of oscillations
= 50 / 40
= 5/4 = 1.25 seconds