Motion and Forces Mid-Topic Assessment

Mia is running around a circular track. What is the fundamental difference between Mia's speed and her velocity as she completes a lap?

• Speed is a vector quantity, while velocity is a scalar quantity.

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed measures displacement, while velocity measures distance.

• Speed is always constant, while velocity can vary.

On a distance-time graph showing Scarlett's walk to school, what does a flat horizontal line indicate about Scarlett's motion?

• Scarlett is moving at a constant speed.

• Scarlett is accelerating.

• Scarlett is stationary.

• Scarlett is decelerating.

On a distance-time graph showing Aria riding her bicycle, if the slope of the curved line is increasing, what does this imply about Aria's motion?

• Aria is moving at a constant speed.

• Aria is decelerating.

• Aria is stationary.

• Aria is accelerating.

Charlotte is driving her car and looks at the speed-time graph of her journey. At one point, the graph shows a flat horizontal line. What does this indicate about her driving during that time?

• The object is at rest.

• The object is moving at a constant speed.

• The object is accelerating.

• The object is decelerating.

Hannah is driving her car and records her speed at different times, plotting a speed-time graph. What physical quantity is represented by the area under this speed-time graph?

• Acceleration

• Velocity

• Distance traveled

• Time

Kai is riding his bicycle and records his speed at different times, plotting the results on a speed-time graph that is curved, as shown. How would Kai determine the acceleration of his bicycle at a specific moment using the graph?

• Calculate the area under graph

• Draw a tangent at the specific point and find the gradient

• Find the gradient of the line

• Read the data from the graph at the y-axis

Jackson is riding his bicycle and records the distance he travels over time on a graph. What does the slope of this distance-time graph represent?

• Speed

• Acceleration

• Time

• Distance

Lily is riding her bicycle and notices that her speed increases by the same amount every second as she pedals harder. Which of the following best describes the type of acceleration Lily is experiencing?

• Acceleration that remains constant over time

• Acceleration that remains zero

• Acceleration that changes at a constant rate

• Acceleration that increases with speed

Hannah is driving her car in a straight line at a constant speed. What does the velocity-time graph of her car look like?

• A horizontal straight line above the time axis

• A curved line increasing upwards

• A vertical straight line

• A horizontal straight line on the time axis

Lily is riding her bicycle and records her velocity at different times during her trip. What does the area under her velocity-time graph represent?

• Acceleration

• Distance traveled

• Time taken

• Speed