Difference between revisions of "Water Resistance"

Revision as of 08:16, 15 October 2018

Water Resistance is a force that slows objects down when they are moving through water.

Noun: Water Resistance

Water Resistance is a contact force.

Water Resistance can only happen to an object in the water. It does not happen to objects on land, in the air or space.

The amount of water resistance depends on:

Size and Water Resistance

The trout is smaller than the dolphin, so it feels less water resistance.	The dolphin is bigger than the trout, so it feels more water resistance.

Shape and Water Resistance

The cube is not streamlined so it will feel a lot of water resistance.	The sphere is more streamlined than the cube so it will feel less water resistance.

Speed and Water Resistance

A rowboat is much slower than a speedboat so it does not feel as much water resistance.	A speedboat is much faster than a rowboat so it feels a lot more water resistance.

Water Resistance is a force which acts to decelerate objects that are moving through the air.

Water resistance is a contact force because it can only exist when an object is moving in the water.

Water resistance increases with speed. The faster you travel the greater the water resistance.

water resistance depends on the surface area facing the direction of motion. The bigger the surface area, the larger the water resistance


As the boat moves through the water the water resistance slows it down.	The thrust of the submarine must provide a constant force to stay at the same speed because the water resistance would cause it to slow down.

@@ Line 47: / Line 47: @@
 ==Key Stage 3==
 ===Meaning===
-A [[force]] that slows things down when they are moving through [[water]].
+[[Water Resistance]] is a [[force]] which acts to [[decelerate]] [[object]]s that are moving through the [[air]].
+===About Water Resistance===
+: '''Water resistance''' is a [[Contact Force|contact force]] because it can only exist when an [[object]] is moving in the [[water]].
+: '''Water resistance''' increases with [[speed]]. The faster you travel the greater the '''water resistance'''.
+: '''water resistance''' depends on the [[Surface Area|surface area]] facing the direction of motion. The bigger the [[Surface Area|surface area]], the larger the '''water resistance'''
+===Examples===
+{| class="wikitable"
+|-
+|[[File:WaterResistanceBoat.png|center|250px]]
+|[[File:WaterResistanceSubmarine.png|center|300px]]
+|-
+| style="height:20px; width:300px; text-align:center;" |As the boat moves through the [[water]] the '''water resistance''' slows it down.
+| style="height:20px; width:300px; text-align:center;" |The [[thrust]] of the submarine must provide a constant [[force]] to stay at the same speed because the '''water resistance''' would cause it to slow down.
+|}