Question

1 what is the average speed of an object that travels 141 km in 3 hours? a 423 meters per second b 47 miles per second c 423 kilometers per hour d 47 kilometers per hour

Explanation:

Step1: Recall the formula for average speed

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

Step2: Substitute the given values

Given \(d = 141\) km and \(t=3\) hours. Then \(v=\frac{141}{3}\) km/h.

Step3: Calculate the value

\(\frac{141}{3}=47\) km/h.

Answer:

D. 47 kilometers per hour