calculate the displacement and average acceleration in the 120 s time interval. – Discussion Forum

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

You must login to ask question.

Search

Ask A Question

Kriti

Asked: August 20, 2026In: Class 9 Science

The velocity-time graph from 0 s to 120 s for a cyclist is shown in Fig. 4.30. Shade the areas (in different colours) representing the displacement of the cyclist (i) while cyclist is moving with constant velocity. (ii) when the velocity of cyclist is decreasing. Also, calculate the displacement and average acceleration in the 120 s time interval.

For constant velocity, the area from 20–100 s is a rectangle: 3 × 80 = 240 m. For decreasing velocity, area from 100–120 s = ½(3+2)×20 = 50 m. Total displacement = 320 m; average acceleration = (2−0)/120 = 0.0167 ...