Below is the sketch of a speed-time graph for a remote-controlled boat moving across a lake for 10 seconds. The boat starts at 2 ms-1 and increases its speed to 8 ms-1 over the first 6 seconds, then maintains this speed until t=10t = 10t=10.
a.[2]
Work out the acceleration for the first 6 seconds.
b.[2]
Calculate the total distance covered by the boat.