GCSE Physics - The difference between Speed and Velocity & Distance and Displacement #51

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This video covers:
- The difference between scalar and vector quantities
- Why speed is scalar, but velocity is a vector
- The difference between distance and displacement
- How to calculate speed and velocity
- Common speeds you need to remember

General info:
- Suitable for all GCSE and IGCSE courses
- Suitable for higher and foundation tiers
- Suitable for triple and combined science

Exam board specific info:
AQA - Everything is relevant to your course!
IGCSE Edexcel - Everything is relevant to your course!
Edexcel - Everything is relevant to your course!
OCR 21st Century - Everything is relevant to your course!
OCR Gateway - Everything is relevant to your course!

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Tip to remember what speed and velocity are:
Scalar and speed both begin with s
Vector and velocity both begin with v

torymonarchist

Damn how does this guy give a lecture which our teachers fail to give throughout the entire semester 😭

wihilvo

You and free science lessons are the only reason why I can even say that I am actually confident in Science, I'm in year 9, so not all the knowledge will apply to me yet, but it is still helping me, thank you so much for the help

hassankarwa

Better than my teacher for free keep it up bro love from Pakistan

hanan

OMG the amount of times you have helped me with physics and maths, like, you don't even understand how much I appreciate your videos.

smkmahimakhan

another person watching this at home?
Welcome to the club
I mean its an amazing video, but why can't my teachers be clearer?

someulove

Your videos are literally the best! I'm 21 years old learning science in detail for the first time (yes my education is complicated), and your videos simplify all the concepts so well for me. Thank you so much :)

smokedavocados

The video explains the differences between speed and velocity, and distance and displacement, providing formulas and examples to understand these concepts.

Key moments:
00:04 Understanding the difference between scalar and vector quantities is crucial in physics. Speed is a scalar quantity, conveying only magnitude, while velocity is a vector quantity, indicating both magnitude and direction.
-Differentiating between distance and displacement is essential in physics, with distance being scalar and displacement being vector, both providing magnitude but displacement also giving direction.
-Calculating speed involves dividing distance by time, resulting in a scalar value, while calculating velocity requires considering displacement over time, yielding a vector value with direction.
-Using velocity allows for representation of negative values to indicate direction, and calculating average speed or velocity involves dividing total distance or displacement by total time taken for the journey.
04:19 Different objects have varying speeds, with people walking at 1.5m/s, cars at 25m/s, and planes exceeding 250m/s. Speed can be influenced by factors like age, health, and effort.
-Sound waves travel at 330m/s in air but change speed in different mediums like water. Wind speed can vary from still to faster than a train, affected by factors like temperature and atmospheric pressure.
-Speed is not the only variable, as structures like buildings and mountains can affect wind speed. Understanding these factors helps in comprehending the speed of various objects.

Dinilhasantha