Edexcel A Level Maths: 8.3 Variable Acceleration in 1D

Pearson A level maths, applied year 2 textbook (8.3)

In this video I cover:

1. Variable acceleration in 1 dimension
2. Displacement, velocity and acceleration
3. Calculus
4. Solving problems involving differentiating displacement and velocity
5. Solving problems involving integrating acceleration and velocity

[thenarkdight]

In Exam Style Question 2, part d, you can get the answers much faster by appreciating that the maximum velocity occurs when sin(0.5t) = 1, and substituting 1 into sin(0.5t) to get v = 10. You then do the same with maxiumum acceleration, substituting cos(0.5t) = 1 into the acceleration formula to get a = 4.

[anushkakaur]

Hi, I'm not sure if i'm typing this in my calculator incorrectly but at 16.38, when i subbed in 3pi I got -6 as my velocity not 10

[sidona]

Hi question on Q1c What does the -12 mean? For instance if it was positive 12 would that mean the t=8 where it would be the smallest displacement