Question

a worker is pushing a wheelbarrow and is accelerating (speeding up) on a level, straight path. the two vertical forces in this event are gravity and a normal force. the vertical forces are. the three horizontal forces are applied force, friction, and drag or resistance. the horizontal forces are. the net force in this event is

Explanation:

Step1: Analyze vertical forces

In the vertical - direction, on a level surface, the force of gravity acting downwards and the normal force acting upwards balance each other. So the vertical forces are balanced.

Step2: Analyze net force

Since the wheel - barrow is accelerating (speeding up), according to Newton's second law $F = ma$ (where $F$ is the net force, $m$ is the mass, and $a$ is the acceleration), when there is an acceleration ($a
eq0$), the net force $F
eq0$. So the net force in this event is unbalanced.

Answer:

The vertical forces are balanced.
The net force in this event is unbalanced.