An object has a uniform acceleration of3 m/s2. At a certain time its v...
Uniform Acceleration
When an object has a uniform acceleration, it means that its velocity is changing at a constant rate.
Given Information
Acceleration = 3 m/s2
Velocity at a certain time = 10 m/s
Time elapsed = 2 seconds
Solution
Using the formula:
final velocity = initial velocity + (acceleration x time)
Let's first find the initial velocity:
initial velocity = final velocity - (acceleration x time)
initial velocity = 10 m/s - (3 m/s2 x 2 s)
initial velocity = 10 m/s - 6 m/s
initial velocity = 4 m/s
Now that we know the initial velocity, we can find the final velocity after 2 seconds:
final velocity = initial velocity + (acceleration x time)
final velocity = 4 m/s + (3 m/s2 x 2 s)
final velocity = 4 m/s + 6 m/s
final velocity = 10 m/s
Answer
The velocity of the object 2 seconds later is 10 m/s.