On the left side, P is traveling with a constant speed; as discussed above, there is a 90 degree angle between velocity and acceleration. On the right side, P moves with increasing/decreasing speed.

Then plot your results on a graph. Remember that when writing up your findings you should refer to increasing and decreasing acceleration, and not faster or slower. You can use additional ...

A line upwards curving to become flat means that the vehicle is accelerating at a decreasing rate to constant speed. Remember, acceleration is the same as gradient, and acceleration = velocity ...