Question

A particle is moving in x-y-plane at 2 m/s along x-axis. 2 seconds later, its velocity is 4 m/s in
a direction making 60° with positive x-axis. Its average acceleration for this period of motion is:
(a) root 5 m/s2, along y-axis
(b) root 3 m/s2, along y-axis
(c) root 5 m/s2, along at 60° with positive x-axis
(d) 3 m/s2, at 60° with positive x-axis.​

Answer 1

Step-by-step explanation:

....refer to pic.

although it is a bit rough.