Question

Q1. Define acceleration.
Q2. What does the area under velocity time graph represent?
Q3. What does the odometer of an automobile measure?
Q4. what is the difference between distance and displacement?
Q5. what is uniform circular motion?​

Answer 1

Answer:

1. Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.
2. The area under a velocity-time graph is the displacement. Velocity can be negative if an object is moving backwards.
3. An odometer or odograph is an instrument used for measuring the distance traveled by a vehicle, such as a bicycle or car.
4. Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.
5. In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation.

Answer 2

Answer:

1) Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

2)The area under the velocity-time graph represents the displacement over a given time interval.

3)An odometer or odograph is an instrument used for measuring the distance traveled by a vehicle, such as a bicycle or car. The device may be electronic, mechanical, or a combination of the two (electromechanical).

4) Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion.

Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

5)In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation.

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