Question

raul wants to investigate how the angle of a ramp affects the speed of an object rolling down the ramp. he can conduct his investigation in a number of different ways. which investigation should he perform? observe video of various objects rolling down hills and estimate the angle of the hill and the speed of the object observe different bicyclists riding down hills of varying steepness record the time it takes one bicyclist to ride down hills of varying steepness perform an experiment in a lab in which the angle of the ramp is controlled and the speed of a rolling cart is measured

Explanation:

To accurately investigate the relationship between ramp - angle and object speed, a controlled experiment is best. In a lab, the angle of the ramp can be precisely set and the speed of the rolling object (rolling cart here) can be accurately measured. Observing videos or real - life scenarios like bicyclists on hills have too many uncontrolled variables.

Answer:

perform an experiment in a lab in which the angle of the ramp is controlled and the speed of a rolling cart is measured