A student investigates how the velocity of a lightweight coffee filter varies as it falls vertically to the ground.
The student drops the coffee filter and records its velocity as it falls.
The graph shows their results.
a.[3]
Explain why the coffee filter reaches a maximum velocity.
b.[3]
The gradient of a tangent drawn to the curved line of the graph gives the acceleration of the coffee filter at that time.
Draw a tangent to the curved line at 0.5 s0.5\text{ s}0.5 s.
Use this tangent to find the acceleration of the coffee filter at 0.5 s0.5\text{ s}0.5 s.
c.[3]
Use the graph to find the approximate distance travelled by the coffee filter during the 2.0 s2.0\text{ s}2.0 s of the experiment.