Motion and time

A car moves with a speed of 80 km/h for 15 minutes and then with a speed of 60km/h for the next 15 mins. The total distance covered by the car is

• 100 km

• 50km

• 35km

• 70km

The value of 2km/h is equal to

• 4/9 m/s

• 5/9 m/s

• 13/9 m/s

• 7/9 m/s

The meter that is used to measure speed of a vehicle is

• Speedometer

• Odometer

• Anemometer

• Thermometer

The meter that measures the distance moved by a vehicle is

• Speedometer

• Odometer

• Anemometer

• Thermometer

36km/h can also be expressed as

• 10m/s

• 3.6m/s

• 100m/s

• 36m/s

Which of the following is a scalar quantity ?

• Distance

• Displacement

• Velocity

• Force

A bus travels 54 km in 90 minutes. The speee of the bus is

• 0.6m/s

• 10m/s

• 5.4m/s

• 3.6m/s

A simple pendulum takes 42 sec. to complete 20 oscillations.what is its time period?

• 2.1s

• 4.2s

• 21s

• 8.40s

Nearly all the clocks make use of

• Straight line motion

• Periodic motion

• Random motion

• Circular motion

Time period of a simple pendulum depends upon its

• Weight of bob

• Length

• Both a and b

• None of these