Final Answer:
The ride is stopped at t1 = 4s.
Step-by-step explanation:
The initial time, t0, when the ride starts is given as 0s. At this time, the acceleration of the ride is given as a = 10m/s2. This acceleration will remain constant until the ride stops. The time at which the ride stops is given as t1. To find the value of t1, we can use the equation of motion v=u+at, where v is the final velocity of the ride, u is the initial velocity of the ride and a is the acceleration of the ride.
Since the initial velocity, u, of the ride is 0m/s, the equation can be written as v = at. As the acceleration, a, is constant, the equation can be further simplified to t = v/a. Substituting the values of v and a in the equation, we get t1 = 4s. Therefore, the ride is stopped at t1 = 4s.