Question

1. the slope of a speed versus time graph represents: *

o a. acceleration.
o b. distance.
o c. force.
o d. velocity.

1. doug rides a motorcycle at an average speed of 42 miles per hour for 3.6 *

hours. the distance he travels is about _ miles.
o a. 11
o b. 38
o c. 47
o d. 150

Explanation:

Question 7

The slope of a speed - time graph is calculated as \(\frac{\text{change in speed}}{\text{change in time}}\). Acceleration is defined as the rate of change of speed (or velocity) with respect to time. So, the slope of a speed - time graph represents acceleration.

Step1: Recall the formula for distance

The formula for distance \(d\) is \(d = v\times t\), where \(v\) is the speed and \(t\) is the time.

Step2: Substitute the given values

Given \(v = 42\) miles per hour and \(t=3.6\) hours. Then \(d=42\times3.6\).

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151.2 is closest to 150.

Answer:

a. acceleration.

Question 21