Question

question 5 of 10
which of the following objects is in dynamic equilibrium?
a. a bicycle accelerating forward at 1.25 m/s²
b. a motorcycle with a constant velocity
c. a man standing in one place without moving
d. a car driving in a circle at a constant speed of 20 m/s

Explanation:

Dynamic equilibrium occurs when an object is moving with a constant velocity (both speed and direction are unchanging), meaning the net - force acting on it is zero. A bicycle accelerating has a non - zero net force, a man standing still is in static equilibrium, and a car moving in a circle has a centripetal force acting on it which changes its direction. A motorcycle with constant velocity has no net force and is in dynamic equilibrium.

Answer:

B. A motorcycle with a constant velocity