Graphs 9
2 marks · EasyThe velocity of a particle is given by , where is in seconds. Find the acceleration of the particle when .
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8 m/s^2 (±0)
Also accept: 8; 8 m/s^2
Common mistakes: Not differentiating; Using t=0
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Marking points
M1 · 1 mark · Differentiates velocity with respect to time: .
A1 · 1 mark · Substitutes to get acceleration 8 m/s^2.
Worked solution
Acceleration is the derivative of velocity:
At , m/s^2.