Acceleration — task. Physics CBSE Live product, Class 9.

1. Acceleration of an object is defined as:

Change in displacement per unit time
Distance covered per unit time
Change in speed per unit time
Change in velocity per unit time

2. The speed–time graph of an object moving in a fixed direction is shown in the figure. What does it represent?

is at rest
moves with a constant speed
moves with a non–zero acceleration
moves with fluctuating speed

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