Q. 354.3( 26 Votes )

# Define motion. What do you understand by the terms ‘uniform motion’? Explain with examples.

Answer :

when the position of a body changes continuously with respect to a stationary object taken as reference point, the body is said to be in motion.

A body has uniform motion if it travels equal distances in equal intervals of time irrespective of the interval. Example: motion of earth around sun.

Non-uniform motion: A body has a non-uniform motion if it travels unequal distances in equal intervals of time. For example: dropping a ball from the roof of a tall building .

Rate this question :

Given figures represent the motion of two objects P and Q. Which of the objects has positive acceleration and which one has negative acceleration?

Fill in the blanks.

(i) ………..is the term used for negative acceleration.

(ii) A bus starting from rest attains a velocity of 54 km/h in 60 s, its acceleration is …………….. .

All In One - ScienceUniform and non-uniform acceleration

Evergreen - ScienceWhen you apply brakes to a car, in which direction is its acceleration?

Evergreen - ScienceGive an example of negative acceleration from daily life situation.

Evergreen - ScienceWhat does the slope of a velocity – time graph represent?

Evergreen - Science