Question

Jon believes he is a fast runner. If he is running with an initial velocity of 4.9 m/s and has a constant acceleration of 1.2 m/s^2, what is his velocity after 3 seconds?

Answer 1

Using the kinematic equation v = u + at, Jon's final velocity after 3 seconds with an initial velocity of 4.9 m/s and an acceleration of 1.2 m/s^2 is calculated to be 8.5 m/s.

Step-by-step explanation:

The student asked about the velocity of a runner after 3 seconds given the initial velocity and constant acceleration. To find the final velocity of the runner, we can use the kinematic equation: v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. With Jon's initial velocity u being 4.9 m/s and his constant acceleration a being 1.2 m/s2, after 3 seconds (t), the calculation will look like this: v= 4.9 m/s + (1.2 m/s2 * 3 s) = 4.9 m/s + 3.6 m/s = 8.5 m/s.