What is the independent variable?
Investigating how stopping distance changes with speed using a toy car on a track.
speed of the car
Force applied to a trolley and measuring its acceleration.
acceleration
Investigating how speed affects stopping distance using a toy car. How do we change the speed?
Use different starting heights or push harder
Measuring stopping distance of a toy car at different speeds. How do we measure stopping distance?
Using a ruler or measuring tape
Measuring acceleration when different forces are applied to a trolley.
applied force
Stopping distance vs speed experiment.
stopping distance
Applying different forces to a trolley to see the effect on acceleration. How do we change the applied force?
Add more weights to the force hanger
Measuring acceleration of a trolley under different forces. How do we measure acceleration?
Using light gates and a data logger
Studying how acceleration changes when we add different masses to a trolley.
mass of the object
Changing mass on a trolley to see how it affects acceleration.
acceleration
Adding masses to a trolley to investigate acceleration. How do we change the mass?
Add masses to the trolley
Measuring frictional force of a block on different surfaces. How do we measure frictional force?
Using a newton meter
Investigating friction by sliding a block over different surfaces.
types of surfaces
Sliding a block on different surfaces to measure friction.
Frictional force or distance travelled
Sliding a block across different surfaces to investigate friction. How do we change the surface?
Place different materials on the ramp or track
Measuring how far a block slides on different surfaces. How do we measure distance travelled?
Using a ruler or measuring tape
Investigating how the angle of a ramp affects the speed of a toy car.
Angle of the ramp
Dropping balls from different heights to study impact speed.
Final speed on impact
Dropping balls from different heights to see how it affects impact speed.
Use a meter ruler or adjustable platform
Dropping balls from different heights to see the effect on speed at impact.
Using a motion sensor or timing gate