Physical Quantities and Motion Concepts

These flashcards cover fundamental concepts in physics related to physical quantities, motion, and errors in measurements.

What are the two types of physical quantities?

Fundamental quantities and derived quantities.

Define fundamental quantities.

Fundamental quantities cannot be defined in terms of other quantities and serve as the foundation for measuring all other physical quantities.

What is the purpose of metric prefixes?

Metric prefixes are used for unit consistency and conversion to express measurements of varying scales.

What is scientific notation?

A convenient way of writing large or tiny numbers.

What is the difference between accuracy and precision in measurements?

Accuracy refers to the degree a measurement corresponds to the true value, while precision refers to the exactness or repeatability of a measurement.

What is the parallelogram method used for?

It is a graphical method used for adding two vectors, subtracting them, or resolving a vector into two components.

What does displacement measure?

Displacement measures the distance between the final position and initial position of an object.

How is velocity defined?

Velocity is the rate of motion of an object with reference to its direction.

What are the key features of free fall motion?

Free fall motion has constant acceleration, is influenced by gravity, and can involve objects starting from rest or moving downwards.

What defines circular motion?

Circular motion occurs when an object moves along a circular path in a consistent manner, with constant speed and changing direction.

What is centripetal acceleration?

Centripetal acceleration is the acceleration of an object moving in a circular path directed towards the center of the circle.

What is the formula for centripetal force?

Centripetal force can be calculated using the formula F = mv²/r, where m is mass, v is velocity, and r is radius.

What is meant by 'uniformly accelerated motion'?

Uniformly accelerated motion involves objects moving along a straight line with constant acceleration.

What is the relationship between velocity and time in motion graphs?

The slope of a velocity vs. time graph represents the acceleration of the object.

How does projectile motion differ from circular motion?

Projectile motion is the motion of an object launched under the influence of gravity, covering a parabolic path, whereas circular motion involves continuous movement along a circular path.