The graph below represents the relationship between speed and time for a car moving in a straight line.

What is the acceleration of the car?

a
10 m/s2

b
0 m/s2

c
0.10 m/s2

d
1.0 m/s2

To determine the acceleration of the car, we need to look at the slope of the graph.

Acceleration is defined as the rate of change of velocity, which can be calculated by finding the slope of the speed-time graph.

From the graph, it can be observed that the speed is constant at 10 m/s for the entire duration of the motion. This means that the speed-time graph is a horizontal line, indicating that the car's speed does not change over time.

Since the speed is constant, the change in speed over time is zero. Therefore, the acceleration of the car is 0 m/s^2.

The correct answer is b) 0 m/s^2.