motion and time

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

• 0.6 m/s

• 10 m/s

• 5.4 m/s

• 3.6 m/s

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

1. The speed of a bus is 72 km/h whereas the speed of a car is 12.5 m/s. Which is moving faster?

The distance travelled by the vehicles is recorded by

• monometer

• odometer

• speedometer

• motometer

The clocks and watches which are used for measuring time are based on

• rectilinear motion

• circular motion

• periodic motion

• rotational motion

If the speed of an object along a straight line keeps changing, its motion is said to be

• uniform motion

• non-uniform motion

• linear motion

• none of these

Swami walks to his school which is at a distance of 4 km from his home in 30 minutes. On reaching he finds that the school is closed and comes back in his friend’s vehicle to home in 10 minutes. His average speed in km/h is

• 8 km/h

• 24 km/h

• 16 km/h

• 20 km/h

When an object changes position with time, it is said to be in

• rest

• stationary

• circle

• motion

The distance-time graph of an object under uniform motion is a

• curved line

• straight line

• circle

• parabola