A race car is traveling at +76 m/s when is slows down at -9m/s2 for 4 seconds. What is his new velocity?
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Answered by
41
apply v = u + at
where u = 76 m/s , t = 4 s, a = -9m/s
v = 76 + (-9×4)
v = 76 - 36
v = 40 m /s
where u = 76 m/s , t = 4 s, a = -9m/s
v = 76 + (-9×4)
v = 76 - 36
v = 40 m /s
Answered by
4
Answer: 40m/s
Explanation:
vi = 76 m/s
a = -9m/s^2
t = 4 s
vf = ?
vf = vi + at
vf = 76 + (-9) x 4
-36 + 76 = 40
Final answer = 40m/s
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