SAT Subject Physics Practice Question 277: Answer and Explanation

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Question: 277

48. A car, starting from rest, accelerates uniformly at 4 m/s2 along a straight track. How far will it travel in 6 s ?

A. 24 m
B. 48 m
C. 64 m
D. 72 m
E. 144 m

Correct Answer: D

Explanation:

Using Big Five #2 (with v0 = 0), we get Δs = at2 = (4 m/s2)(6 s)2 = 72 m.

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