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Edexcel IGCSE Physics Exam 2025 With 100% Correct Answers
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average speed = - correct answers distance / time v = d / t Standard Unit for mass (m) - correct answers kilogram (kg) Standard Unit for distance (d) or displacement (s) - correct answers metre (m) Standard Unit for speed (s) or velocity (v) - correct answers metre/second (m/s) St...

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  • February 8, 2025
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  • 2024/2025
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Edexcel IGCSE Physics Exam 2025 With
100% Correct Answers

average speed = - correct answers ✔✔distance / time

v=d/t



Standard Unit for mass (m) - correct answers ✔✔kilogram

(kg)



Standard Unit for distance (d) or displacement (s) - correct answers ✔✔metre

(m)



Standard Unit for speed (s) or velocity (v) - correct answers ✔✔metre/second

(m/s)



Standard Unit for acceleration (a) - correct answers ✔✔metre/second²

(m/s²)



Standard Unit for Force (F) - correct answers ✔✔Newton

(N)



Standard Unit for time (t) - correct answers ✔✔Second

(s)



Standard Unit for gravitational field strength (g) - correct answers ✔✔Newton/kilogram

(N/kg)

,Standard Unit for moment

(Paper 2 Only) - correct answers ✔✔Newton metre

(Nm)



Standard Unit for momentum (p)

(Paper 2 Only) - correct answers ✔✔kilogram metre/second

(kg m/s)



What does the gradient of a distance-time graph represent? - correct answers ✔✔Gradient or the slope
gives the speed.

Flat line means stationary, straight line means constant speed, curved line means accelerating



Describe how to investigate the motion of a toy car - correct answers ✔✔- Set a ramp up so that the top
of it is a certain height, h, above the desk, and the other end is fixed in place on the desk.

- Measure the distance the toy car will travel down the ramp using a metre ruler.

- Measure the time taken for the toy car to roll down the ramp using a stop watch.

- As it is difficult to start and stop the watch at exactly the right time, the experiment is repeated five
times so an average time can be calculated.

- Divide the distance by the average time to calculate the average speed of the car.

- To improve the accuracy of the experiment, light gates connected to electronic timers could be used as
human reaction times will no longer affect the results. We still take multiple readings as the car may not
have been released in exactly the same way each time.

- An electronic timer that reads to more decimal places will give the answer to a greater level of
precision.



Acceleration = - correct answers ✔✔Change in velocity/time taken

a = (v-u) / t



What does the gradient of a velocity-time graph represent?

What does the area underneath the line represent? - correct answers ✔✔gradient = acceleration

flat line = constant velocity

,straight lines = constant acceleration (changing velocity)

area under graph = distance travelled



(final speed)² = - correct answers ✔✔(initial speed)² + (2 x acceleration x distance)

v² = u² + (2 x a x s)

(This equation is given to you)



A force can change an objects.... - correct answers ✔✔- speed

- shape

- direction



Types of force.... - correct answers ✔✔Gravitational (Weight)

Electrostatic

Magnetic

Friction

Air Resistance (Drag)

Upthrust (from fluids)

Reaction (from solids)

Engine force

(and more...)



What is Scalar?

Give some examples - correct answers ✔✔A measurement with just magnitude.

Time, distance, temperature, mass, energy, charge, area, volume, frequency etc.



What is a Vector?

Give some examples - correct answers ✔✔A measurement with magnitude and direction.

Velocity, acceleration, force, weight, momentum, etc.

, There is an unbalanced force - correct answers ✔✔when 2 or more forces acting on an object are
uneven



Resultant Force is..... - correct answers ✔✔The combination of all forces acting on an object.



Newton's 2nd Law: Force = - correct answers ✔✔mass x acceleration

F=mxa



Newton's 2nd Law: Acceleration - correct answers ✔✔force / mass

a=F/m



Newton's 2nd law: Mass - correct answers ✔✔force / acceleration

m=F/a



Weight = - correct answers ✔✔mass x gravitational field strength

W=mxg



Friction and Air Resistance act in what direction? - correct answers ✔✔The direction that opposes
motion (e.g. if an object is falling then air resistance is acting upwards)



Stopping Distance = - correct answers ✔✔Thinking Distance + Braking Distance.

It is the total distance for the car to come to a complete stop



What is Thinking Distance? What factors affect it? - correct answers ✔✔The distance taken for the driver
to react and apply the brakes.

- Tiredness, Alcohol or drugs, Distractions, Age, Poor Visibility (e.g. fog), Reaction Time



What is Braking Distance? What factors affect it? - correct answers ✔✔The distance traveled while the
braking force stops the car.

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