Question

an object is traveling in a straight line. the graph below shows the objects velocity over time.
which line segment shows the object traveling with a constant, positive acceleration?
segment w
segment x
segment y
segment z
a cart starting from rest travels a distance of 3.6 meters in 1.8 seconds. the average speed of the cart is
0.20 m/s
2.0 m/s
0.50 m/s
3.0 m/s

Explanation:

Step1: Recall the formula for average speed

Average speed \(v_{avg}=\frac{d}{t}\), where \(d\) is distance and \(t\) is time.

Step2: Substitute the given values

Given \(d = 3.6\) meters and \(t=1.8\) seconds. Then \(v_{avg}=\frac{3.6}{1.8}\).

Step3: Calculate the value

\(\frac{3.6}{1.8}=2.0\)

Answer:

2.0 m/s (corresponding to the second option in the second question)