______ time graph shows speed of an object.

The correct answer is Distance.

Key Points

•  Distance
  • ​Distance - time graph shows the speed of an object.
  • A distance-time graph can show the distance travelled while an object moves in a straight line.
  • The gradient of the line in a distance-time graph is equal to the object's speed.
  • The object is travelling more quickly the steeper the line and the larger the gradient.
  • Distance is the sum of an object's movements, regardless of direction.
  • Distance can be defined as the amount of space an object has covered, regardless of its starting or ending position.

Additional Information

• Velocity
  • ​Velocity is the direction in which an object is moving and serves as a measure of the rate at which its position is changing as seen from a specific point of view and as measured by a specific unit of time (for example, 60 km/h northbound). 
• Displacement
  • A displacement is a vector in geometry and mechanics that have a length equal to the shortest distance between a point P's initial and final positions.
  • It calculates the length and angle of the net motion, or total motion, in a straight line from the starting point to the destination of the point trajectory. 
• Acceleration
  • ​The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. It is a vector quantity to accelerate. (in that they have magnitude and direction).
  • The direction of the net force acting on an object determines the direction of its acceleration.