Question

how can acceleration be zero, but still be moving? a car decreases speed at a constant rate until it comes to rest the car travels round trip and is back at the starting point car has constant speed and is traveling on a straight path a car runs out of gas and slowly rolls to a stop

Explanation:

To determine when acceleration is zero while moving, we analyze each option:

• Option 1: A car decreasing speed has negative acceleration (not zero).
• Option 2: A round - trip involves direction changes (so velocity changes, meaning acceleration isn't zero).
• Option 3: If a car has constant speed and is on a straight path, its velocity (speed + direction) is constant. Acceleration is the rate of change of velocity. Since velocity isn't changing, acceleration is zero, and the car is still moving.
• Option 4: A car rolling to a stop has decreasing speed, so it has negative acceleration (not zero).

Answer:

C. car has constant speed and is traveling on a straight path