If the sprinter travels at a constant velocity of 12 m/s for the last 64 m , how long will it take to reach the finish line?

5.3 s

Explanation:

Distance = rate × time

64 m = 12 m/s × t

t ≈ 5.3 s

c.the charges if the proton and electron and gravity

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.