WorksheetsUnderstanding Balanced and Unbalanced Forces
Total questions: 20
Worksheet time: 10mins
Balanced Forces
Forces that are equal in size and opposite in direction
Forces that are unequal in size and opposite in direction
Forces that are equal in size and in the same direction
Forces that are unequal in size and in the same direction
Example of Balanced Forces
Book resting on a table
A car accelerating on a highway
A person pushing a wall
A ball rolling down a hill
Acceleration
Change in velocity over time
Constant speed
Rate of distance covered
Force applied on an object
Air Resistance
Force that opposes motion through air
A type of friction that occurs in liquids
A force that accelerates objects downward
The force that pulls objects towards the Earth
Gravity
Force that pulls objects toward Earth
A type of energy that moves objects
A measure of the weight of an object
A force that pushes objects away from Earth
Net Force in Unbalanced Forces
Equal to 0 N
Less than 0 N
Greater than 0 N
Always 10 N
Friction
Force that opposes motion
Force that enhances motion
Force that has no effect on motion
Force that changes direction of motion
Definition of Force
A push or pull on an object
A type of energy
The mass of an object
The speed of an object
Tension
Force in a stretched rope or string
A type of pressure exerted by fluids
The weight of an object in motion
A measure of electrical resistance
Inertia
Tendency of an object to resist changes in motion
Force that causes an object to accelerate
Energy stored in an object due to its position
Rate at which an object moves in a straight line
Effect of Balanced Forces
No change in motion
Acceleration of the object
Change in direction
Increase in speed
Formula for Force
F = mv (Force = mass × velocity)
F = ma (Force = mass × acceleration)
F = m/a (Force = mass ÷ acceleration)
F = m + a (Force = mass + acceleration)
Mass
Amount of matter in an object
Weight of an object
Volume of an object
Density of an object
Effect of Unbalanced Forces
Change in speed or direction
No effect on motion
Constant speed
Increased mass
Unbalanced Forces
Forces that cause a change in motion
Forces that are equal in size and opposite in direction
Forces that do not affect the motion of an object
Forces that are always in balance
Net Force
Overall force acting on an object
The force applied by gravity
The total mass of an object
The force of friction opposing motion
Net Force in Balanced Forces
0 N
5 N
10 N
15 N
Example of Unbalanced Forces
Kicking a soccer ball
A book resting on a table
A car parked on a flat road
A person standing still
Unit of Force
Joule (J)
Newton (N)
Pascal (Pa)
Watt (W)
Normal Force
Support force exerted by a surface
Force acting downward due to gravity
Frictional force opposing motion
Tension force in a rope
