# Mech 1 Chapter 11 - Variable Acceleration

Designed to accompany the Pearson Applied Mathematics Year 1/AS textbook.

## Dr J Frost

### 3rd Jun 2020 Flag Comment

I've reuploaded to replace the dolphin equation.

## Mrs S Wegg

### 31st May 2020 Flag Comment

I changed the equation of the dophin graph to v= - t^3-4t^2+11t+2 so it made more sense

## Mrs S Wegg

### 31st May 2020 Flag Comment

Fantastic resources and just perfect to help students who are continuing A level study from home during this time.

## Dr O Gray

### 19th Mar 2019 Flag Comment

Excellent resource, thank you. Only error is that the dolphin's velocity is initially decreasing and the answer given is a local min.

## Mrs L Newton

### 24th Nov 2018 Flag Comment

Can't begin to describe how many hours you have saved me, thank you! Can you change the dolphin question though? It doesn't make sense!

## Dr J Frost

### 5th Aug 2018 Flag Comment

I've fixed the Pudding error.

## Katie

### 7th Jun 2018 Flag Comment

Pudding the cat question on variable acceleration should be -36t if (b) and (c) are correct. In which case (a) needs correcting. But thank you for brilliant slides. Just thought it was good to know.

## lily

### 23rd Apr 2018 Flag Comment

hello sir can you do a compilation of exam questions by topic

## Zakir Rana VHS

### 25th Mar 2018 Flag Comment

Hi Sir, Can you do year 2 mechanics as well please? Thank You

## Jeff

### 14th Mar 2018 Flag Comment

Thanks for the hard work! I think there is a problem with Pudding the Cat (actual quadratic has no solutions; should be fixed by turning last term into '-36t'). Also the dolphin question (slide 9) doesn't quite work as the stationary point given as the answer is actually a local minimum; the max occurs at t = -2. Also the speeds are unrealistically high for a dolphin which I find funny, but my colleague is a marine biologist and she thinks you should change it. It led to a great chat with my class and plenty of laughter about the sorts of things which may have caused a dolphin or cat to move so swiftly and how the cat can only imagine ever being stationary and the dolphin may make a splashing sound as it comes out of the cannon... Cannot thank you enough for all you do; saves hours.

## Fiona F

### 12th Mar 2018 Flag Comment

Thank you soo much. Your reqources have really helped me this year.

### 11th Mar 2018 Flag Comment

Thank you very much for all the resources!

## Mr U

### 7th Mar 2018 Flag Comment

Another fantastic PPT to help with the teaching of the new A level. You are a real star!

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