What is the definition of speed?, The change in position per unit time., The total distance traveled., The distance traveled per unit time., How quickly an object changes direction. , What is the SI unit of speed?, Kilometers per hour (\text{km/h})., Meters per second (\text{m/s})., Seconds per meter (\text{s/m})., Miles per hour (\text{mph})., What does instantaneous speed refer to?, The speed averaged over an entire journey., The speed at any particular moment., The speed relative to another object., How is average speed calculated?The maximum speed achieved. , How is average speed calculated?, Total time divided by total distance., Total distance divided by total time., Instantaneous speed multiplied by time., Change in distance over the initial time. , Which operation completes the formula: \text{Speed} = \text{distance} \_\_\_\_\_\_\_\_\text{time}?, \times, \div, +, -, When is an object's instantaneous speed zero?, When it travels at a constant velocity., When it is standing still., When it is accelerating rapidly., When it is moving in a circle. , Why is average speed commonly used for long journeys?, Because speed remains constant throughout the journey., Because it simplifies the calculation regardless of instantaneous speed changes.Because it simplifies the calculation regardless of instantaneous speed changes., Because it is the same as instantaneous speed., Because the total distance is easy to measure, What is the usual approximate value for human walking speed?, 1m/s, 10m/s, 20m/s, The meaning of "relative speed" is:5m/s, The meaning of "relative speed" is:, How fast an object is moving compared to the ground., How fast one object moves compared to another., The total speed of two objects combined., The speed of an object in a straight line. , Motion is generally judged relative to:, The center of the Earth., Surrounding objects., A fixed point in space., The speed of light.  , What happens to the relative speed of two cars moving in the same direction at the same speed?, Their relative speed increases., Their relative speed becomes zero., Their relative speed is equal to their absolute speed, Their relative speed halves.  , Relative speed compares the motion of one object to a \_\_\_\_\_\_\_\_\_ object., Moving, Reference, Stationary, Faster, In which scenario does relative speed \text{increase} between two objects?, When they stay still., When they move together at the same speed., When they move apart., When they move perpendicular to each other. , An example of average speed in daily life is:, The speed shown on a car's speedometer., The time taken to walk to school., The speed of an object just as it starts moving., The speed of light in a vacuum.  , What makes an instantaneous speed change during a run?, Running in a straight line., Tiredness, turns, obstacles, or uneven ground., Constant pace., Calculating the average speed.  , What does a distance-time graph show?, How speed changes over distance., How acceleration changes over time., How distance changes over time., How speed and time are related.  , What does a horizontal line on a distance-time graph indicate?, High, constant speed., Increasing speed., stationary object., Decreasing speed.  , What does the \text{gradient} of a distance-time graph represent?, Acceleration., Distance, Time, Speed, What does a straight, diagonal line on a distance-time graph signify?, Stationary object., Constant speed., Changing speed., Zero acceleration.  , A steeper slope on a distance-time graph means:, Lower speed., Higher speed., Zero speed., Constant acceleration. , Acceleration is defined as:, Distance traveled per unit time., Total distance divided by total time., Change in speed over time., Why does a ball falling towards Earth accelerate?The speed at a particular moment.  , Why does a ball falling towards Earth accelerate?, Due to air resistance., Due to gravity., Because its speed is constant., Because it is moving away from Earth.  , What kind of line on a distance-time graph indicates that the speed is changing?, A horizontal line., A straight, diagonal line., A curved line., What does a line with decreasing steepness on a distance-time graph show?A straight vertical line.  , What does a line with decreasing steepness on a distance-time graph show?, An object is speeding up., An object is slowing down., An object is moving at a constant speed., An object is stationary.  , Acceleration can refer to which of the following?, Only speeding up., Only slowing down., Only movement in a straight line., Only constant speed.  , Why is the slope (gradient) important in a distance-time graph?, It represents the time elapsed., It shows the total distance covered., It shows how fast the object is moving., What does a \text{shallow line} on a distance-time graph show?What does a \text{shallow line} on a distance-time graph show?It indicates the starting point.  , What does a \text{shallow line} on a distance-time graph show?, Fast speed., Slow speed., No speed., Rapid acceleration.  , What type of speed does a car's speedometer typically display?, Average speed., Maximum speed., Instantaneous speed., Relative speed. , If speed increases, what happens to the slope of a distance-time graph?, It becomes flatter., It becomes more steep., It becomes horizontal., It remains the same. , Why are graphs used to show motion?, They require less calculation., They use the standard SI unit of \text{m/s}., They make it easy to see changes in motion., They automatically calculate acceleration. .

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