The difference in speed is 50 miles per hour If the rate is constant, we should duvide this change into 12 intervals (or seconds) 40/12 = 4 (approximately) So, the answer would be A
Tara's car accelerated from 10 miles per hour to 60 miles per hour in 12 seconds.First let's solve for the unit rate of Tara's acceleration:=> 10 miles per hour=> 60 miles per 12 seconds=> 60 / 12=> 5 miles per secondsWhat is the approximate rate of change in the miles per hour that Tara's car accelerated?Thus the answer to this question is letter B. 5 miles per second.
