Question

During the firt seconds after takeoff, a rocket traveled 208 kilometers in 50 minutes at a constant rate. Suppose a penny is dropped from a skyscraper and could travel 153 kilometers in 1/2 hour at a constant rate. Which of these objects had a faster unit rate per hour? How much faster?​

Answer 1

"Penny had a faster unit rate per hour. Faster by 56.4 km/hr"

Explanation:

We need all the rates to be converted in hour.

Rocket:

208 km/ 50 minutes converted to hour:

`(208KM)/(50Mins)*(60Mins)/(1HR)=(208*60)/(50)(KM)/(HR)=249.6`

Penny:

153 km/30 minutes converted to hour is simple

60 minutes in an hour so 153 * 2 = 306

THus, 306 KM/HR

Penny had a faster unit rate per hour by 306 - 249.6 = 56.4 km/hr