how long does a car with an acceleration of 2.0 m/s^2 take to go from 10m/s to 30m/s?
2 = change of velocity/change in time = 20/t
20
Athlete Mesert Defar runs at 10 m/s. How long will it take her to go a) 1 m b) 5 m c) 20 m d) 100 m
To determine the time it takes for a car to go from an initial velocity to a final velocity, we can use the equation:
v = u + at
where:
v = final velocity
u = initial velocity
a = acceleration
t = time
In this case, the initial velocity (u) is 10 m/s, the final velocity (v) is 30 m/s, and the acceleration (a) is 2.0 m/s^2. We need to find the time (t).
Rearranging the equation, we have:
t = (v - u) / a
Substituting the given values:
t = (30 m/s - 10 m/s) / 2.0 m/s^2
t = 20 m/s / 2.0 m/s^2
Simplifying, we have:
t = 10 s
Therefore, it will take 10 seconds for the car to go from 10 m/s to 30 m/s with an acceleration of 2.0 m/s^2