Question

please help me with this physics class 9th​

Answer 1

Answer:

it will be option no. 3

if it's correct then plzz mark as brainliest....

Answer 2

Change in velocity is given by the area under acceleration vs time graph.

So, the answer is the area of trapezium.

i.e., Δv = ½(4+2)(4) = 12 m/s