what is acceleration of an object over a 4second period if its starting velocity is 8 m/s and it velocity is 20 m/s?
a=(v2-v1)/t a=(20-8)/4=3m/s^2
To find the acceleration of an object over a 4-second period, we can use the formula:
Acceleration = (Final Velocity - Initial Velocity) / Time
In this case, the initial velocity is 8 m/s, the final velocity is 20 m/s, and the time is 4 seconds. Plugging these values into the formula gives us:
Acceleration = (20 m/s - 8 m/s) / 4 seconds
Simplifying:
Acceleration = 12 m/s / 4 seconds
Acceleration = 3 m/s²
So, the acceleration of the object over a 4-second period is 3 m/s².