Question

two forces are acting on a wheelbarrow. one force is pushing to the right and an equal force is pushing to the left. what can you say about the wheelbarrows movement? a it is slowing down b it is not moving c it is moving faster and faster d its speed is changing at a constant rate.

Explanation:

When two equal forces act in opposite directions on an object (like the wheelbarrow here), the net force is zero ($F_{net} = F_{right}-F_{left}=0$ since $F_{right}=F_{left}$). According to Newton's first law of motion, an object at rest will stay at rest, and an object in motion will stay in motion with a constant velocity (including zero velocity) unless a net external force acts on it. If the wheelbarrow was initially at rest, the balanced forces mean it remains at rest. If it was moving, it would move at constant velocity, but among the options, "it is not moving" (assuming initial rest) is the most appropriate as the other options (slowing down, speeding up, changing speed) require a net force to accelerate or decelerate.

Answer:

B. It is not moving