If the distance is 640 miles, and the time is 40 hours, whats the distance

A. Use the meterstick to measure the vertical height of the incline, and use the timer to record the time it takes for the cart to travel down the incline Use the timer to record the time it takes the cart to travel alongside a meterstick that is attached to the incline.

C. Use slow motion camera to film the cart as it rolls down the incline alongside the timer that is attached to the incline.

Explanation:

Since acceleration is change in velocity with respect to time. Two things that are important are the velocity of the cart and time taken by the cart to accelerate down the plane.

Note that the higher the height of the inclined plane, the more the acceleration. This shows the importance of knowing the height of the inclined plane.

Also we need to know the time taken by the body to accelerate down the plane and as such the importance of the timer.

To get the velocity, we can monitor the velocity of the body through the use of camera, the velocity can be determined at each time interval after the picture has been taken.