Answer :
1. Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.
2. The formula for speed is speed = distance ÷ time. Distance is in meters (m) and time is in seconds (s) so the units will be meters per second (m/s)
3. A horizontal line on a speed-time graph represents a constant speed. A sloping line on a speed-time graph represents an acceleration. The sloping line shows that the speed of the object is changing. The object is either speeding up or slowing down.
2. The formula for speed is speed = distance ÷ time. Distance is in meters (m) and time is in seconds (s) so the units will be meters per second (m/s)
3. A horizontal line on a speed-time graph represents a constant speed. A sloping line on a speed-time graph represents an acceleration. The sloping line shows that the speed of the object is changing. The object is either speeding up or slowing down.