Question

Explain relative motion in 6 to7 lines.

Answer 1

HEY!!

____________________________

✴It means the motion you measure for something depends on where you measure from.

✴For example, You are on the sidewalk and measure the speed of a truck and its driver to be 60mph.

✴But if you were in the truck and measured the speed of the driver it would be zero, because now, relative to you, the driver is not moving.

Answer 2

When we talk about the velocity of something we first determine a reference point and then according to this reference point we say the velocity of the object. For example, you are in a bus and it goes with the velocity of 50 m/s to the east, then a truck passes you with a velocity of 60m/s to the east. When thetruck is next to the bus you feel that as yougo backward tothe west or when the two cars have same velocity when you look another car you feel you donot move. On the contrary, consider the below examples, if you look at the stationary objects at the ground when you travel, thenyou feel yourself travel with the velocity of the car. All these are the result of relative motion. Velocity of the moving objects with respect to other moving or stationary object is called“relative velocity” and this motion is called “relativemotion”. Reference point is too important in physics. We doall calculationsaccording to the reference points. For instance, we observe the plane flying in the air, velocityof that plane with respect tous is the sum of the velocities of plane and the wind. However,the same planehas different velocity with respect to the flying other plane. To sum up, we determine the directions and quantities of velocity of the objects with respect to a chosen reference point. We look at some examples and vector notations of relative velocity of the objects.