Question

How much time does it take for a runner moving at a speed of 8.0 meters per second to come to a stop if her

acceleration is -2.0 m/s??
a. 4.0 5
b. 10 s
C. 16 s
d. 6.05

Answer 1

a. 4.0 s

Step-by-step explanation:

Given:

v₀ = 8.0 m/s

v = 0 m/s

a = -2.0 m/s²

Find: t

v = v₀ + at

(0 m/s) = (8.0 m/s) + (-2.0 m/s²) t

t = 4 s