A particle’s displacement, sss metres, from a fixed origin at time ttt seconds, is given by the equation
s=4e0.2ts = 4e^{0.2t}s=4e0.2t
Find an expression for the velocity, v m s−1v \text{ m s}^{-1}v m s−1, of the particle at time ttt seconds.
Select the correct answer from the options below:
v=20e0.2tv = 20e^{0.2t}v=20e0.2t
v=0.8e0.2tv = 0.8e^{0.2t}v=0.8e0.2t
v=0.8te0.2tv = 0.8te^{0.2t}v=0.8te0.2t
v=0.5e0.2tv = 0.5e^{0.2t}v=0.5e0.2t
Practise Edexcel A Level Maths 9.2 Differentiating exponentials and logarithms with exam-style questions for A Level Maths. 23 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.