Y10 Physics - 7th Nov - Do Now

What is the equation for calculating average speed?

• average speed = distance / time

• average speed = total distance + total time
• average speed = distance * time

• average speed = distance - time

What are the units of acceleration?

• m/s^2
• cm/s^2
• m/s
• km/h

What does a flat, horizontal line mean on a distance-time graph?

• The object is moving at a constant speed.
• The object is accelerating.
• The object is not moving or is at rest.
• The object is moving in a circular path.

To calculate the distance travelled by an object from a velocity-time graph, we need to...

• Calculate the gradient

• Calculate the area under the line

• Divide distance by time

• Look at the time taken when the object is stationary

To calculate the acceleration of an object from a velocity-time graph, we need to...

• Calculate the gradient

• Calculate the area under the line

• Divide distance by time

• Look at the time taken when the object is stationary

To calculate the gradient of a line, we need to...

• Find the change in x divided by the change in y between two points on the line.
• Find the change in y divided by the change in x between two points on the line.
• Multiply the change in x by the change in y between two points on the line.
• Add the change in x to the change in y between two points on the line.

What is 1200m in km?

• 1.2 km

• 12 km

• 120 km

• 0.12 km

The independent variable in an investigation is...

• The thing we measure

• The one thing we change

• The two or more things we change

• The things we keep the same

The dependent variable in an investigation is...

• The thing we measure

• The one thing we change

• The two or more things we change

• The things we keep the same

Why do we normally repeat an experiment multiple times?

• It will take longer and be more fun!

• It will allow us to calculate a mean by including all anomalies

• 
  It will allow us to calculate a mean (average) and get more accurate results

• It will allow us to change the independent variable each time