30Jan

# A skateboarder has an acceleration of -1.9 m/s2. If her initial speed is 6 m/s how long does it take her to stop? A. 4.1s B. 3.2s C. 0.32s D. 2.1s

Rangata
Physics
1 0

A skateboarder has an acceleration of -1.9 m/s2. If her initial speed is 6 m/s how long does it take her to stop? A. 4.1s B. 3.2s C. 0.32s D. 2.1s

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