Someone rides a bicycle at an initial speed of 4 meters per second and drives up a slope with an acceleration of 0.2 meters per square second and a slope length of 20 meters, How long does it take for a bicycle to cross the slope?

Someone rides a bicycle at an initial speed of 4 meters per second and drives up a slope with an acceleration of 0.2 meters per square second and a slope length of 20 meters, How long does it take for a bicycle to cross the slope?

s=a*t*t/2+v0*t
20=-0.2*t*t/2+4t
Solution
T = 34.1 or 5.9
At 20 seconds, the velocity has been reduced to 0, so the 34.1 second solution is eliminated
T = 5.9 seconds