To find the acceleration, we can use the equation acceleration = change in velocity / time. In the first 4 seconds, the car decelerates from 10 m/s to 0 m/s, so the acceleration is -10m/s² . In the next 4 seconds, the car accelerates from 0 m/s to its original speed, so the acceleration is 10m/s². The speed-time graph shows a decreasing speed over the first 4 seconds and an increasing speed over the next 4 seconds.
To find the acceleration, we can use the equation acceleration = change in velocity / time. In the first 4 seconds, the car decelerates from 10 m/s to 0 m/s, so the change in velocity is 10 m/s. Thus, the acceleration is -10m/s² (negative because it is decelerating).
To find the acceleration in the next 4 seconds, we can use the same equation. The car goes from 0 m/s to its original speed, so the change in velocity is the original speed. Thus, the acceleration is 10m/s² (positive because it is accelerating).
To draw the speed-time graph, we can plot the speed (y-axis) against time (x-axis). The graph will show a decreasing speed from 10 m/s to 0 m/s over the first 4 seconds, and then an increasing speed from 0 m/s to the original speed over the next 4 seconds.
To draw the velocity-time graph, we can plot the velocity (y-axis) against time (x-axis). The graph will show a decreasing velocity from 10 m/s to 0 m/s over the first 4 seconds, and then an increasing velocity from 0 m/s to the original velocity over the next 4 seconds.
To draw the displacement-time graph, we can plot the displacement (y-axis) against time (x-axis). The graph will show a linear decrease in displacement over the first 4 seconds, and then a linear increase in displacement over the next 4 seconds, with the final displacement equal to the initial displacement.
The question probable may be:
How can we determine the acceleration of a car during the first and next 4 seconds, given changes in velocity, and what information can be obtained from the speed-time graph, velocity-time graph, and displacement-time graph for this car's motion over the mentioned time intervals?