A racecar driver steps on the gas,changing his speed from 10 m/s to 30 m/s in 4 seconds.The acceleration of the racecar is A)0 B)2 m/s². C)4 m/s². D)5 m/s². E)7.5 m/s².

Name: A racecar driver steps on the gas,changing his speed from 10 m/s to 30 m/s in 4 seconds.The acceleration of the racecar is A)0 B)2 m/s 2 . C)4 m/s 2 . D)5 m/s 2 . E)7.5 m/s 2 .
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Question

Quizplus · Accepted Answer

Acceleration = (final velocity - initial velocity)/time

Acceleration = (30 m/s - 10 m/s)/4 s

Acceleration = 5 m/s²

A Racecar Driver Steps on the Gas,changing His Speed from 10