In which of the following situations does the net force on the object equal zero? (Select all that apply.) Responses A school bus slowing down for a red traffic light. A school bus slowing down for a red traffic light. A toy rocket in free fall mo

The net force on an object equals zero when the object is either at rest or moving with a constant velocity (i.e., not accelerating). Based on that principle, the situations where the net force equals zero are: 1. **A car moving at a constant velocity.** (No acceleration, thus net force is zero.) 2. **A ball at rest.** (Not moving, no net force acting.) 3. **A student walking down the hall at a constant velocity.** (No acceleration, thus net force is zero.) The other situations involve either acceleration or changing motion, so the net force does not equal zero. So the answers are: - A car moving at a constant velocity. - A ball at rest. - A student walking down the hall at a constant velocity.