Physics Edexcel IGCSE - Paper 1 exam |\ |\ |\ |\ |\ |\ |\
with answers |\
Practical: Investigate the motion of everyday objects such as toy
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cars or tennis balls.
|\ |\ |\
* mark the start and end positions for the distance
|\ |\ |\ |\ |\ |\ |\ |\ |\
* use a metre rule to measure the distance
|\ |\ |\ |\ |\ |\ |\ |\
* line up front of car with start point, release and start timer
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move eyes to end point
|\ |\ |\ |\
* stop timer when front of car passes end point
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* repeating twice and calulate an average
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* make sure car starts from stationary
|\ |\ |\ |\ |\ |\
calculate average speed using : average speed = distance
|\ |\ |\ |\ |\ |\ |\ |\ |\
travelled/ time taken |\ |\
What does the gradient equal in a velocity time graph?
|\ |\ |\ |\ |\ |\ |\ |\ |\
acceleration
How would you determine the distance travellled on a velocity-
|\ |\ |\ |\ |\ |\ |\ |\ |\
time graph? |\
The area under the graph
|\ |\ |\ |\
,What may happen when a force acts on a body?
|\ |\ |\ |\ |\ |\ |\ |\ |\
It may change the velocity - the speed, direction or both.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
How may a force effect the shape of a body?
|\ |\ |\ |\ |\ |\ |\ |\ |\
Stretching, squishing or twisting it |\ |\ |\ |\
Name different types of forces
|\ |\ |\ |\
Gravitational, weight, friction, electrostatic, air resistance (drag),
|\ |\ |\ |\ |\ |\ |\
tension (force in a spring), up thrust, lift, thrust
|\ |\ |\ |\ |\ |\ |\ |\
Define a scalar |\ |\
Quantities with only magnitude |\ |\ |\
Define a vector |\ |\
Quantities with magnitude and direction |\ |\ |\ |\
Is force a scalar or a vector?
|\ |\ |\ |\ |\ |\
A vector, as is has amagnitude measured in (N) but it also has a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
direction, a push or a pull, up, down, left or right.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
,How do you calculate the resultant force of forces that act along
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a line?
|\
Forces along a line can combine by addition.
|\ |\ |\ |\ |\ |\ |\
What causes friction?
|\ |\
Friction is caused by surfaces rubbing. The force always acts in
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the opposite direction to motion.
|\ |\ |\ |\
What does stopping distance = ?
|\ |\ |\ |\ |\
Thinking distance + braking distance
|\ |\ |\ |\
What factors affect a vehicle's thinking distance?
|\ |\ |\ |\ |\ |\
Tiredness
Alcohol
speed of the car |\ |\ |\
, What factors affect a vehicle's braking distance?
|\ |\ |\ |\ |\ |\
Road conditions
|\
Tyre conditions
|\
Brake conditions |\
speed of the car |\ |\ |\
mass of the car |\ |\ |\
Describe the forces acting on a falling object.
|\ |\ |\ |\ |\ |\ |\
- Initially the only force is weight as drag is proportional to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
velocity.
- So the object accelerates downwards.
|\ |\ |\ |\ |\
- As it accelerates the drag increases as well.
|\ |\ |\ |\ |\ |\ |\ |\
- There is a smaller resultant force downwards so a smaller
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
acceleration.
- The object reaches a speed where the drag is equal to the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
weight, terminal velocity. |\ |\
Practical: Investigate how extension varies with applied force for
|\ |\ |\ |\ |\ |\ |\ |\ |\
helical springs, metal wires and rubber bands
|\ |\ |\ |\ |\ |\
- Set up your apparatus as shown in the
|\ |\ |\ |\ |\ |\ |\ |\
-Measure the length of your spring without any hanging masses.
|\ |\ |\ |\ |\ |\ |\ |\ |\
with answers |\
Practical: Investigate the motion of everyday objects such as toy
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
cars or tennis balls.
|\ |\ |\
* mark the start and end positions for the distance
|\ |\ |\ |\ |\ |\ |\ |\ |\
* use a metre rule to measure the distance
|\ |\ |\ |\ |\ |\ |\ |\
* line up front of car with start point, release and start timer
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
move eyes to end point
|\ |\ |\ |\
* stop timer when front of car passes end point
|\ |\ |\ |\ |\ |\ |\ |\ |\
* repeating twice and calulate an average
|\ |\ |\ |\ |\ |\
* make sure car starts from stationary
|\ |\ |\ |\ |\ |\
calculate average speed using : average speed = distance
|\ |\ |\ |\ |\ |\ |\ |\ |\
travelled/ time taken |\ |\
What does the gradient equal in a velocity time graph?
|\ |\ |\ |\ |\ |\ |\ |\ |\
acceleration
How would you determine the distance travellled on a velocity-
|\ |\ |\ |\ |\ |\ |\ |\ |\
time graph? |\
The area under the graph
|\ |\ |\ |\
,What may happen when a force acts on a body?
|\ |\ |\ |\ |\ |\ |\ |\ |\
It may change the velocity - the speed, direction or both.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
How may a force effect the shape of a body?
|\ |\ |\ |\ |\ |\ |\ |\ |\
Stretching, squishing or twisting it |\ |\ |\ |\
Name different types of forces
|\ |\ |\ |\
Gravitational, weight, friction, electrostatic, air resistance (drag),
|\ |\ |\ |\ |\ |\ |\
tension (force in a spring), up thrust, lift, thrust
|\ |\ |\ |\ |\ |\ |\ |\
Define a scalar |\ |\
Quantities with only magnitude |\ |\ |\
Define a vector |\ |\
Quantities with magnitude and direction |\ |\ |\ |\
Is force a scalar or a vector?
|\ |\ |\ |\ |\ |\
A vector, as is has amagnitude measured in (N) but it also has a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
direction, a push or a pull, up, down, left or right.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
,How do you calculate the resultant force of forces that act along
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a line?
|\
Forces along a line can combine by addition.
|\ |\ |\ |\ |\ |\ |\
What causes friction?
|\ |\
Friction is caused by surfaces rubbing. The force always acts in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the opposite direction to motion.
|\ |\ |\ |\
What does stopping distance = ?
|\ |\ |\ |\ |\
Thinking distance + braking distance
|\ |\ |\ |\
What factors affect a vehicle's thinking distance?
|\ |\ |\ |\ |\ |\
Tiredness
Alcohol
speed of the car |\ |\ |\
, What factors affect a vehicle's braking distance?
|\ |\ |\ |\ |\ |\
Road conditions
|\
Tyre conditions
|\
Brake conditions |\
speed of the car |\ |\ |\
mass of the car |\ |\ |\
Describe the forces acting on a falling object.
|\ |\ |\ |\ |\ |\ |\
- Initially the only force is weight as drag is proportional to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
velocity.
- So the object accelerates downwards.
|\ |\ |\ |\ |\
- As it accelerates the drag increases as well.
|\ |\ |\ |\ |\ |\ |\ |\
- There is a smaller resultant force downwards so a smaller
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
acceleration.
- The object reaches a speed where the drag is equal to the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
weight, terminal velocity. |\ |\
Practical: Investigate how extension varies with applied force for
|\ |\ |\ |\ |\ |\ |\ |\ |\
helical springs, metal wires and rubber bands
|\ |\ |\ |\ |\ |\
- Set up your apparatus as shown in the
|\ |\ |\ |\ |\ |\ |\ |\
-Measure the length of your spring without any hanging masses.
|\ |\ |\ |\ |\ |\ |\ |\ |\
