Forces and Motion REVISION PODCAST (Edexcel IGCSE physics topic 1)

This revision podcast is for Edexcel IGCSE physics (4PH0 or 4SC0), and covers all of topic 1 - forces and motion. It is also suitable for other GCSEs.

start - distance time graphs
0:59 speed or velocity?
1:24 displacement or distance?
1:37 distance-time graph examples
2:51 velocity-time graphs
4:15 acceleration
4:45 velocity-time graph examples
6:20 forces - balanced and unbalanced
7:37 F=ma (Forces cause acceleration - Newton's 2nd law)
8:55 weight (not mass)
10:00 freefall stages
12:18 stopping a car
13:52 momentum (not on dual award)
16:29 car crashes and vehicle safety
17:12 Newton's 3rd law (action and reaction)
18:00 moments
19:03 moments at bridges (not on dual award)
19:44 centre of gravity
20:49 moments examples
21:40 stability (centre of mass)
22:38 Hooke's law (stretching things)
24:40 orbits and forces including comets
25:40 orbital speed formula
27:00 the universe

[cRaZyAmoN]

there is a special place in heaven for people like you, you the real MVP!

[erenyeager]

1:24 - displacement or distance
1:37 distance time graphs
2:51 - velocity time graphs
4:24 - acceleration
6:22 - forces
9:04 - weight
10:06 - freefall
12:22 - stopping car
13:52 - momentum
16:39 - crumple zone/ airbag/ seatbelt
17:21 - Newton's third law (for every action there is equal and opposite of it)
18:00 - Moments
19:53 - center of gravity
22:40 - Hooke's law (spring)

[sparkyjackson]

Dear Ben, God bless you, words can't describe how much you and your videos have helped, I went from nothing in Physics during my first year of o levels, and now I'm doing my degree in uni, it would mean the world to me if you replied, and I'm really bummed Edexcel isn't even giving you the utmost amount of credit, because you are really a gem, take care my friend

[dstars]

I would like to thank you for these amazing videos!
Before this, i had little interest in physics but after watching your videos i learnt so much!

and yesterday i received my Igcse results and got an A in Physics and i owe it all to you!

Thank you :)

[onizzal]

I hope edexcel pay you for this coz i learn more from ur vids than i do from my teachers

[tilly]

I just wanted to say a massive thank you for creating these videos, you have improved my physics tremendously and I admire the time consuming effort you must have put in to making them. I am currently preparing for my IGCSE physics external examination for this approaching Wednesday and avidly watching the podcasts and doing the examples while I can! In my most recent mocks after discovering your videos I got 93% across both paper 1 and paper 2 making a huge improvement from my B I had previously received. These videos have helped no end and I am extremely grateful-you are a saint, thank you Ben! Georgie :)

[mehrabque]

I literally did not understand much in classes but thanks, to these podcasts. I'll be getting a good grade FOR PHYSICS on my O levels. :D

[itsmalak]

I have a physics exam tomorrow and couldn't study but this saved my life, THANK YOU

[pantelischaralambous]

5:38 the answer is 3m/s because the quastion asks for the decelaration if it asked for the accelaration it would be -3m/s

[benaryder]

There's no hard and fast rule about what to plot on each axis of a graph - I have plotted Force on the y-axis and Extension on the x-axis so that the gradient of the graph is k - the spring constant. (Consider the equation F=kx and the general equation for a straight line, y=mx).
I know that generally, students at GCSE are taught that the independent variable (what you change) goes on the x-axis, and the dependent variable (what you measure) goes on the y-axis, but sometimes it dies make sense to swap the axes, if the gradient is more meaningful. 

[farhantanvirfaruque]

It's been 5 years and your videos are still the best one out there for IGCSE physics. Thank you very much, sir!! I am really glad I found a channel like yours. I am going to sit for the exam this may 2018 and probably it will be the last session for this specification. Wish me luck :)

[gonzalosomoza]

this video has become 4 years old and its saved me from three exams now. Ben, if you read this, I would like to thank you soooo much. I got an A+ on my test thanks to your waves video, as you explain everything much better than my teacher. During class she just puts your videos and stays there not teaching, so thank you.

[kbibk]

Ive learnt more watching this video than i have in the past 10 weeks of physics classes

[salinakhan]

I am so pleased to have found this, it's nice there are people who post educational videos like this for other students to help them. As a private student, this is great along with my book resources. thank you!!!!

[oscarluke]

your videos are so helpful can you please do the biology and chemistry igcse it will help me so much and i feel like others too!!

[RasheedKhan-bmfm]

A very good and fast way of learning through all my notes all over again. Exams are in a month, and this really helped. Thank you Ben! :)

[jaebummiesjelly]

You and your videos are a life saver, you fully explained 2 weeks of classes in a video and for the first time I understand it completely 😭 thankyou so much

[stormzoperation]

this helps me more than any online class will

[coolcat]

This is saving my GCSE in physics!! I would never survive without it!!!

[aminahwasim]

this is amazing. I learned to much. Thank you! Honestly i learned so much more here than in actual physics class in school. So thanks again!!