a accelerates steadily so that it goes from a velocity of 20m/s to a velocity of 40m/s in 4 seconds.what is its acceleration?
To find the acceleration of an object, you can use the following formula:
acceleration = (final velocity - initial velocity) / time
Given:
Initial velocity (u) = 20 m/s
Final velocity (v) = 40 m/s
Time (t) = 4 seconds
Substituting the given values into the formula:
acceleration = (40 m/s - 20 m/s) / 4 s
acceleration = 20 m/s / 4 s
acceleration = 5 m/s²
Therefore, the acceleration of the object is 5 m/s².
acceleration = (final velocity -initial velocity)/time
= (40-20)m/s/4s
=5m/s^2