Question

a group of students were investigating how changing the steepness of an incline could affect the speed that a marble would travel through a tube. one of their trials is shown in the figure. using the information on the image, what was the marbles speed? a) 1.4 m/s b) 1.0 m/s c) 0.7 m/s d) 0.4 m/s

Explanation:

Step1: Recall the speed formula

The formula for speed is \(v=\frac{d}{t}\), where \(d\) is distance and \(t\) is time.

Step2: Identify values from the image

From the image, \(d = 1\space m\) and \(t=1.4\space s\).

Step3: Calculate the speed

Substitute the values into the formula: \(v=\frac{1}{1.4}\approx0.7\space m/s\)

Answer:

C. \(0.7\space m/s\)