A skateboarder has an acceleration of -1.9 m/s\(^2\). If her initial speed is 6 m/s, how long does it take her to stop?
A. 4.1 s
B. 3.2 s
C. 0.32 s
D. 2.1 s
Answer (2)
intial speed = 6m/s final speed = 0 m/s as it stop acceleration = 1.9 m/s2 time taken = t s
v=u+at 0=6+1.9*t t=3.15 s = 3.2 s
The skateboarder takes approximately 3.2 seconds to stop based on her initial speed and acceleration. This was calculated using the formula that relates acceleration, initial speed, and final speed. Thus, the correct option is B.
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