Question

8 multiple choice 2 points
a car travels a distance of 98 meters in 10 seconds. what is the average speed of
the car during this 10 - second interval?
4.9 m/s
9.8 m/s
49 m/s
98 m/s
9 multiple choice 2 points
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
10 multiple choice 2 points
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
5.0 m/s

Explanation:

Step1: Recall the formula for average speed

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

Step2: Substitute the given values

Given \(d = 98\) meters and \(t=10\) seconds. Then \(v_{avg}=\frac{98}{10}\).

Step3: Calculate the value

\(\frac{98}{10}=9.8\) m/s.

Answer:

B. \(9.8\) m/s