An object originally at rest is uniformly accelerated to a speed of 8.0 meters per second in 2.0 seconds. What is the acceleration of the object?
acceleration=\frac{v_{final}-v_{initial}}{time}
a. <p>4.0 m/s2</p>
b. <p>16 m/s2</p>
c. <p>10. m/s2</p>
d. <p>0.25 m/s2</p>
The formula for acceleration is:
acceleration = (v_final - v_initial) / time
In this case, the initial velocity is 0 m/s (since the object is originally at rest), the final velocity is 8.0 m/s, and the time is 2.0 seconds. Plugging these values into the formula, we get:
acceleration = (8.0 m/s - 0 m/s) / 2.0 s = 8.0 m/s / 2.0 s = 4.0 m/s^2
Therefore, the acceleration of the object is 4.0 m/s^2. Answer choice a) is the correct answer.