how long does it take a car to change its velocity from 15m/s to 25m/s if it accelerates uniformly at 5m/s2.
(25-15) m/s
------------------ = 2 s
5 m/s^2
Please help solve the problem
Please answer this question
To find out how long it takes for the car to change its velocity from 15 m/s to 25 m/s, we can use the equation:
v = u + at
where:
- v = final velocity (25 m/s)
- u = initial velocity (15 m/s)
- a = acceleration (5 m/s^2)
- t = time taken
First, let's rearrange the equation to solve for time (t):
t = (v - u) / a
Substituting the given values:
t = (25 m/s - 15 m/s) / 5 m/s^2
Simplifying the equation:
t = 10 m/s / 5 m/s^2
t = 2 seconds
Therefore, it takes 2 seconds for the car to change its velocity from 15 m/s to 25 m/s when accelerating uniformly at 5 m/s^2.