1) A graph used to show the displacement of an object changing with time is called __________. a) acceleration-time graph b) displacement-time graph c) velocity-time graph d) position-time graph 2) At which time duration does the car move 50 m from the starting point with uniform speed? a) From 4 to 8 seconds b) From 8 to 16 seconds c) From 0 to 4 seconds d) From 16 to 20 seconds 3) Based on the graph, the gradient is zero __________. a) from 0 to 4 seconds b) from 4 to 8 seconds c) from 8 to 16 seconds d) from 16 to 20 seconds 4) Which of the following time duration shows a negative gradient? a) From 0 to 4 seconds b) From 4 to 8 seconds c) From 8 to 16 seconds d) From 16 to 20 seconds 5) What does it mean when the gradient is zero? a) The object is stationary. b) The object is decelerating. c) The object is accelerating. d) The object is moving with uniform speed. 6) What do you call the graph shown in the diagram? a) Position-time graph b) Velocity-time graph c) Displacement-time graph d) Acceleration-time graph 7) At which time duration does the boy move with increasing velocity or uniform acceleration? a) From 0 to 8 seconds b) From 0 to 20 seconds c) From 8 to 16 seconds d) From 16 to 20 seconds 8) Which of the following is true about the time duration from 8 to 16 seconds? a) The boy moves with uniformly increasing velocity or uniform acceleration. b) The boy is moving with uniform velocity or zero acceleration. c) The boy is moving with uniformly decreasing velocity or uniform deceleration. d) The boy is not moving. 9) How will you describe a gradient that is positive and uniform in a velocity-time graph? a) Vertical line b) Horizontal line c) Straight line with downward slope d) Straight line with upward slope 10) What does it mean when the gradient in a velocity-time graph is negative and uniform? a) The velocity of the object decreases uniformly and the acceleration of the object is negative and uniform. b) The velocity of the object increases uniformly and the acceleration of the object is positive and uniform.  c) The object is moving with uniform velocity and the acceleration of the object is equal to zero. d) The velocity of the object increases uniformly and the acceleration of the object is negative and uniform. 

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