Question

the acceleration time graph of a body starting from rest on a straight line is shown average speed in the interval t=0 to t=20​

Answer 1

Answer:

400m/s

Explanation:

Find the area of the graph under two squares and as speed is a scalar quantity

It do not need-ve or +ve signs

Just add the two areas and you'll get the answer

Ya one more thing that you know area gives you the velocity but speed is asked and speed is the mode of velocity

Speed=|velocity|

Hope this helps you