Question

Please answer 12-13 based on the graph.

Use the graph below for questions 12- 15. Velocity versus Time 10 1 2 3 45678 9 10 Time (s) 12. What is the average acceleration of the particle from t 2s to t9s? 13, what is the instantaneous acceleration at 5s?

Answer 1

Average acceleration= average of the slopes from t=2 to 9s

=((4-0)/(4-0)+(2-4)/(6-4)+0+(5-2)/(9-8))/3

=(3)/3 =1 m/s^2

Instantaneous acceleration =slope at t=5= -1 m/s^2