An autonomous underwater vehicle (AUV) is conducting a deep-sea survey. It is initially cruising at a speed of 2.4 m/s when its propulsion system is engaged to escape a strong undercurrent.
The AUV accelerates uniformly for a duration of 15.0 s, increasing its speed to 11.4 m/s.
Calculate the magnitude of the acceleration of the AUV during this time interval.
Use the equation:
a=v−ut a = \frac{v - u}{t} a=tv−u53 exam-style questions on Edexcel GCSE Physics 2.2 Speed, velocity and acceleration, covering 2.2.1 Speed and distance–time graphs, 2.2.2 Acceleration and the uniform-acceleration equation, 2.2.3 Velocity–time graphs, and 2.2.4 Measuring speed, typical speeds and free-fall acceleration. Each one has a worked solution and a mark scheme showing where the marks go.