A body is moving north at 12m/s and 5 seconds later it has a velocity of 30m/s in the same direction. What was the acceleration of the body?

To find the acceleration of the body, we can use the formula:

acceleration = (final velocity - initial velocity) / time

Given:
Initial velocity (u) = 12 m/s
Final velocity (v) = 30 m/s
Time (t) = 5 s

Substituting the values in the formula, we have:

acceleration = (30 m/s - 12 m/s) / 5 s

Now let's calculate the acceleration:

acceleration = 18 m/s / 5 s
acceleration = 3.6 m/s²

Therefore, the acceleration of the body is 3.6 m/s².