Quick Revision Questions: Motion
 Cards: 40 Quick Revision Questions: Motion

## FAQs on Quick Revision Questions: Motion Video Lecture - Flash Cards for Class 9

 1. What is motion?
Ans. Motion refers to the change in position of an object with respect to its surroundings over time. It can be described in terms of distance, displacement, speed, velocity, and acceleration.
 2. What are the different types of motion?
Ans. There are three main types of motion: 1. Translational motion: This is when an object moves in a straight line. 2. Rotational motion: This is when an object spins or rotates around a fixed axis. 3. Vibrational motion: This is when an object oscillates back and forth around a fixed point.
 3. What is the difference between speed and velocity?
Ans. Speed is a scalar quantity that refers to how fast an object is moving, whereas velocity is a vector quantity that includes both the speed and direction of an object's motion. Speed is calculated by dividing the distance traveled by the time taken, while velocity is calculated by dividing the displacement by the time taken.
 4. What is the formula to calculate average speed?
Ans. The formula to calculate average speed is: average speed = total distance traveled / total time taken. It is important to note that average speed does not take into account the direction of motion.
 5. What is acceleration?
Ans. Acceleration refers to the rate at which an object's velocity changes over time. It can be calculated by dividing the change in velocity by the time taken. If the acceleration is positive, it means the object is speeding up, while a negative acceleration indicates the object is slowing down.

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