10th Sep '25

Multiple Choice 2015-16

Question	Answer	Mislead1	Mislead2	Mislead3	Point	Flag
What is a force?	Forces can be either pushes or pulls, which can be combined to form a twist.				Forces can be either pushes or pulls, which can be combined to form a twist.	0
What do we use force arrows for? How do we draw them?	Force arrows in free body diagrams are used to show the direction of forces and the size of the force by its length or label. Force arrows have a solid arrow head.				Force arrows in free body diagrams are used to show the direction of forces and the size of the force by its length or label. Force arrows have a solid arrow head.	0
What do we measure forces in? What symbol can we use?	Forces are measured in newtons with the symbol 'N'.				Forces are measured in newtons with the symbol 'N'.	0
What is one Newton equivalent to?	A newton is the weight of a small apple.				A newton is the weight of a small apple.	0
What happens if forces are combined?	Forces can be combined to help or cancel each other.				Forces can be combined to help or cancel each other.	0
How do we calculate whether forces are balanced or unbalanced? How can we tell if a force is negative? What is the 'resultant force'?	Adding forces in 1 dimension, allows to calculate whether forces are balanced or unbalanced. Forces in the a backwards direction are considered negative. The combined force is is called the 'Resultant force' and is the result of adding all the forces together.				Adding forces in 1 dimension, allows to calculate whether forces are balanced or unbalanced. Forces in the a backwards direction are considered negative. The combined force is is called the 'Resultant force' and is the result of adding all the forces together.	0
What is momentum? Pick the most correct answer.	Momentum is the tendency for an object to keep moving with the same speed and direction.	Momentum is the tendency for an object to stay not moving.	Momentum is the tendency for an object to keep moving as at the same speed only.	Momentum is the tendency for an object to keep moving in the same direction only.	Momentum is the tendency for an object to keep moving as it was.	1
How can we change momentum?	It takes unbalanced forces to change the momentum of an object.	It takes an acceleration to change the momentum of an object.	It takes an inertia to change the momentum of an object.	It takes a balanced forces to change the momentum of an object.	It takes a force to change the momentum of an object.	1
Why do we need unbalanced forces?	Unbalanced forces being needed to cause objects to: - stop or start moving, - change their speed, - direction of motion These are all forms of acceleration (qualitative only).				Unbalanced forces are needed to cause objects to: - stop or start moving, - change their speed, - direction of motion These are all forms of acceleration (qualitative only).	0
What is acceleration dependent on?	The acceleration is in the direction of resultant force and the speed of the change is dependent on the size of the force.				The acceleration is in the direction of resultant force and the speed of the change is dependent on the size of the force.	0
How can we cause friction?	Rubbing causes friction between surfaces.				Rubbing causes friction between surfaces.	0
What does the amount of friction depend on?	The amount of friction depends on the roughness of the surfaces.	The amount of friction depends on the weight of an object.	The amount of friction depends on the width of the surfaces.	The amount of friction depends on the width of an object.	The amount of friction depends on the roughness of the surfaces (and closing force).	1
In what direction does friction always act in relation to motion?	Friction always acts to resist motion and therefore acts in the opposite direction to the (potential) motion.	Friction always acts to assist motion and therefore acts in the opposite direction to the (potential) motion.	Friction always acts to assist motion and therefore acts in the same direction to the (potential) motion.	Friction always acts to resist motion and therefore acts in the same direction to the (potential) motion.	Friction always acts to resist motion and therefore acts in the opposite direction to the (potential) motion.	1
In what direction does a reaction force work and what size is this force?	When an object applies a force to a second object, the second object applies and force equal in size but opposite in direction back.				When an object applies a force to a second object, the second object applies and force equal in size but opposite in direction back.	0
What is a the name of the force a solid object applies back, when acted upon by another force?	The force a solid object applies back, when acted upon by another force, is called the Reaction force.	The force a solid object applies back, when acted upon by another force, is called the Compression force.	The force a solid object applies back, when acted upon by another force, is called the Tension force.	The force a solid object applies back, when acted upon by another force, is called the Resultant force.	The force an object applies back is called the Reaction force.	1
What is deformation?	Deformation is changing the shape of an object.	Deformation is slowing down of an object.	Deformation is speeding up of an object.	Deformation is shrinking of an object.	Unbalanced forces can also change the shape of an object: deformation.	1
How is the force of tension created?	The force of tension is created when a solid is stretched.	The force of tension is created when a solid is squashed.	The force of tension is created when a fluid flows over an aerofoil.	The force of tension is created when a solid pushes back.	When solid objects are stretched there is a force of tension created with in it.	1
When will a spring stop deforming?	A spring will deform (stretch or compress) until the tension balances the load placed upon it.				A spring will deform (stretch or compress) until the tension balances the load placed upon it.	0
What are the 3 non-contact forces?	The 3 non-contact forces are: Electrostatic; Magnetic; Weight due to gravity;	The 3 non-contact forces are: Air resistance; Electrostatic; Weight due to gravity;	The 3 non-contact forces are: Air resistance; Magnetic; Weight due to gravity	The 3 non-contact forces are: Air resistance; Electrostatic; Magnetic	Forces can also be classified as either: - non-contact forces: - gravity forces acting at a distance on Earth and in space, - forces between magnets, - Electrostatic forces due to static electricity: Rubbed balloon	1
How else, other than rubbing two objects together, can friction be produced? What is this also known as?	Pushing things out of the way also creates a type of friction: - ball pit balls - air (particles): air resistance - water (particles): water resistance These forces are also called drag.				Pushing things out of the way also creates a type of friction: - ball pit balls - air (particles): air resistance - water (particles): water resistance These forces are also called drag.	0
Why do cars have a top speed?	Cars have a top speed because as a car gets faster the drag increases until it balances the force from the engine.	Cars have a top speed because as a car gets faster the drag decreases until it balances the force from the engine.	Cars have a top speed because as a car gets faster the drag increases until it no longer balances the force from the car engine.	Cars have a top speed because as a car gets faster the drag decreases until it no longer balances the force from the car engine.	Cars have a top speed because: - As they get faster they hit more air particles (harder) - When the car hits the particles the particles hit the car causing drag - The thrust from the engine force is constant - When the drag balances the engine force there is no resultant force - So no acceleration - So car travels at a constant (top) speed	1
What is the name of the force produced by an engine or motor?	Engines and motors produce a force called Thrust.	Engines and motors produce a force called Upthrust.	Engines and motors produce a force called Lift.	Engines and motors produce a force called Kinetic.	Engines and motors produce a force called Thrust.	1
Energy Cells Particles Forces	PROGRESS OBSERVATION OPPORTUNITY				Progress Observation Opportunity	0

Mod	Number of Questions
0S	10
1B	10
1C	10
1P	10
BI	5