Answer:
1.82 s
Explanation:
Newton's second law of motion says that the net force on an object is equal to the mass times acceleration, which is equal to the change in velocity over time.
Applying Newton's second law:
∑F = ma
-mgμ = ma
a = -gμ
Acceleration is change in velocity over time:
(v − u) / t = -gμ
(u − v) / t = gμ
t = (u − v) / gμ
Plugging in values:
t = (2.79 m/s − 0 m/s) / (9.8 m/s² × 0.156)
t = 1.82 s
