The distance between Delhi and Mumbai is usually expressed in the unit of

Which of the following does not express a time interval?

Which of the following figure shows the correct placement of a block along a scale for measuring its length?

A ball rolling on the ground represents

Curved length can be measured by :

Find the odd one out:

An example of rectilinear motion is

Which of the following is not a combination of two motions?

Motion of Potter's wheel is:

A piece of ribbon folded five times is placed along 30 cm long measuring scale as shown in Fig.

The length of the ribbon is between

Give the name of the motion possessed by the vehicles on a straight road.

Name one process of ancient times which is used to measure the length.

Give the name of the device used to measure girth of a tree.

Mention some modes of transportation of ancient times.

Correct the following.
(a) The motion of a swing is an example of rectilinear motion.
(b) 1 m = 1000 cm

How do people know how far they have travelled?

When you are travelling in plane, are you in motion or rest?

Name two devices that are used to measure length.

The height of a person is 1.965 m. Express it in cm and mm.

What are the inexact methods of measurement?

Give two examples each of modes of transport used on land, water and air.

The distance between Radha's home and her school is 3250 m. Express this distance into km.

Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched on.

Can an object be in motion and rest simultaneously for different observers? Give an example and consequence.

We need standard unit of measurements for a quantity. Explain why.

Mamta is measuring a piece of wood with broken meter scale. Her friend Kanchan correct her by measuring it from any full mark of meter
(a) State the values that Kanchan reflect here.
(b) Give one correct way for measurement.

Boojho is not sure why we say that the distance of the stone from your hand is same when we whirl it around. Can you help him understand this? Remember that stone is held with string.

Give two examples of each of the following mode of transport used by humans- (a) Land, (b) Water, (c) Air

Describe three rules to measure length.

A carpenter is fixing a curtain rod on the wall by tightening a screw. How many different kinds of motions is the screw undergoing?

While travelling in a train, it appears that the trees near the track are moving whereas co-passengers appear to be stationary. Explain the reason.

How are the motions of a wheel of a moving bicycle and a mark on the blade of a moving electric fan different? Explain.

Three students measured the length of a corridor and reported their measurements. The values of their measurements were different. What could be the reason for difference in their measurements? (Mention any three)

How can we find the length of a curved line? Explain.