Terminal velocity

Question 1

If an object does not have a force propelling it down what will happen and why

Answer 1

It will stop, due to friction

Question 2

Friction always acts in the same or opposite direction to the movement

Answer 2

Opposite

Question 3

To travel at a steady speed must the driving force be equal to or more than the frictional forces

Answer 3

Equal to

Question 4

What is drag

Answer 4

The resistance you get in a fluid (gas or liquid)

Question 5

How to reduce drag

Answer 5

-keep the shape of an object streamlined

Question 6

What happens when an object falls through fluids

-the force of g… is more that the … forces, so it …
-as the speed i… friction b… up, reducing the … until the frictional forces are … to the accelerating f…
-this means it has reached its … speed and … velocity

Answer 6

-the force of gravity is more that the frictional forces, so it accelerates
-as the speed increases friction builds up, reducing the acceleration until the frictional forces are equal to the accelerating force
-this means it has reached its maximum speed and terminal velocity

Question 7

How does shape and area affect terminal velocity

Answer 7

The bigger the surface area, the more surface for frictional forces to act against