WHAT TO

The total distance covered is equal to the sum of the distances traveled in each direction. In this case, the person walked 20 meters to the right and then walked back 30 meters, so the total distance covered is 20 + 30 = 50 meters.

The displacement is the straight line distance between the initial and final positions. In this case, the person walked 20 meters to the right and then walked back 30 meters, so the displacement is (30 - 20) = 10 meters to the left.

If a runner has an average speed of 7.5 kilometers per hour, they can cover a distance of 7.5 kilometers in 1 hour.

To calculate the time it will take for a car to travel a distance of 1 kilometer with an average speed of 60 kilometers per hour, you can divide the distance by the speed: 1 kilometer / 60 kilometers per hour = 0.0167 hours, or approximately 1 minute.

If an object has a zero velocity, its acceleration is also zero. If an object has zero acceleration, its velocity can be anything, including zero or a constant non-zero value.