*1896060959*
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined page at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 95.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/8690/2] DC (DE/JG) 354047/4
OCR is an exempt Charity
Turn over
1 Casey is driving a car along a straight, level road when they see a road block ahead.
, 2
The graph shows how the speed of the car changes with time immediately after
Casey sees the road block.
30
20
Speed
(m / s)
10
0
0.0 1.0 2.0 3.0 4.0 5.0
Time (s)
(a) While Casey is reacting to the obstruction the car continues to travel at constant
speed.
Calculate the distance travelled by the car while Casey is reacting.
Use the Equation Sheet.
Distance = ..................................................... m [4] (b) The initial kinetic energy of
the car is 174 kJ.
When Casey presses the brakes, the braking force acting on the car is 4350 N.
The work done by the brakes to stop the car = the kinetic energy lost by the car.
Calculate the distance travelled while the car is braking.
Use the equation: work done = force × distance
© OCR 2025
, 3
Distance = ..................................................... m
(c) In the village where Casey lives the speed limit has been reduced from 30 mph to 20
mph.
Explain how reducing the speed limit can improve road safety in the village.
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
.............. [2]
2 Amit does an experiment at room temperature to compare the thermal conductivity of
different insulating materials.
(a) This is Amit’s method:
• Place a small metal container inside a large metal container.
• Place some insulating material between them.
• Pour water at a temperature of 80 °C into the small container and place a lid on
it.
• Measure the temperature of the water every minute for 30 minutes using a
thermometer.
• Repeat the experiment using different insulating materials.
This is the apparatus used:
Thermometer
Lid
Insulating material
Water
Small metal container
Large metal container
(i) State two variables that Amit should control in this experiment.
1 ....................................................................................................................................
...................
2 ....................................................................................................................................
...................
© OCR 2025 Turn over
, 4
(ii) Explain why Amit uses metal containers rather than plastic containers.
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
.............. [2]
(b) The graph shows Amit’s results for one insulating material.
90
80
70
60
50
Temperature
(°C ) 40
30
20
10
0
0 5 10 15 20 25 30 35
Time (minutes)
(i) Draw a tangent to the curve at time of 15 minutes. [1]
(ii) Calculate the gradient of the tangent drawn in (b)(i).
Gradient = ........... °C / minute
© OCR 2025
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined page at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 95.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2025 [601/8690/2] DC (DE/JG) 354047/4
OCR is an exempt Charity
Turn over
1 Casey is driving a car along a straight, level road when they see a road block ahead.
, 2
The graph shows how the speed of the car changes with time immediately after
Casey sees the road block.
30
20
Speed
(m / s)
10
0
0.0 1.0 2.0 3.0 4.0 5.0
Time (s)
(a) While Casey is reacting to the obstruction the car continues to travel at constant
speed.
Calculate the distance travelled by the car while Casey is reacting.
Use the Equation Sheet.
Distance = ..................................................... m [4] (b) The initial kinetic energy of
the car is 174 kJ.
When Casey presses the brakes, the braking force acting on the car is 4350 N.
The work done by the brakes to stop the car = the kinetic energy lost by the car.
Calculate the distance travelled while the car is braking.
Use the equation: work done = force × distance
© OCR 2025
, 3
Distance = ..................................................... m
(c) In the village where Casey lives the speed limit has been reduced from 30 mph to 20
mph.
Explain how reducing the speed limit can improve road safety in the village.
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
.............. [2]
2 Amit does an experiment at room temperature to compare the thermal conductivity of
different insulating materials.
(a) This is Amit’s method:
• Place a small metal container inside a large metal container.
• Place some insulating material between them.
• Pour water at a temperature of 80 °C into the small container and place a lid on
it.
• Measure the temperature of the water every minute for 30 minutes using a
thermometer.
• Repeat the experiment using different insulating materials.
This is the apparatus used:
Thermometer
Lid
Insulating material
Water
Small metal container
Large metal container
(i) State two variables that Amit should control in this experiment.
1 ....................................................................................................................................
...................
2 ....................................................................................................................................
...................
© OCR 2025 Turn over
, 4
(ii) Explain why Amit uses metal containers rather than plastic containers.
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
...................
.......................................................................................................................................
.............. [2]
(b) The graph shows Amit’s results for one insulating material.
90
80
70
60
50
Temperature
(°C ) 40
30
20
10
0
0 5 10 15 20 25 30 35
Time (minutes)
(i) Draw a tangent to the curve at time of 15 minutes. [1]
(ii) Calculate the gradient of the tangent drawn in (b)(i).
Gradient = ........... °C / minute
© OCR 2025
