Motion and Time

The formula for distance is

• distance = timespeed
• distance = speedtime
• distance = 1speed x time
• distance = speed × time

The distance travelled by the vehicles is recorded by

• monometer
• odometer
• speedometer
• motometer

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

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

• rectilinear motion
• circular motion
• periodic motion
• rotational motion

The device which is used for measuring time intervals in sports activities is called

• wrist watch
• stop watch
• stop clock
• quartz watch

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

The most well known periodic motion is that of

• sundial
• stop watch
• simple pendulum
• sand clock

Which of the following is based on the study of the shadow cast by the sun?

• Simple pendulum
• Atomic clock
• Sun dial
• Quartz clock

The most appropriate unit for expressing the speed of a space rocket is

• m/s
• km/s
• km/h
• km/min

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