Question

for the acceleration time garph shown in figure the change in velocity of particle from t=0 to t=6s

Answer 1

change in velocity = acceleration × time which is the are under the graph

area of first triangle = 1/2 × 4 × 4 = 8

are of second triangle = 1/2 × 2 × (-4) = -4

therefore area under the graph = 8+(-4) = 4

therefore change in velocity is 4m/s and hence the correct answer is option B!

Answer 2

Answer:

4 m/s

Explanation:

find the area of both triangle and add them..