SASS 2025 4E Physics Prelim paper 1

3 Prelim Examination 2025/4Exp/Physics Paper 1 __________________________________________________________________________________________________ [Turn Over 1 The diagram shows a clothes peg. Which device is suitable for obtaining an accurate value for the height of the clothes peg? A a digital micrometer screw gauge B a measuring cylinder C a metre rule D a tape 2 What is the unit of work expressed in base unit? A (kgm)/s2 B (kgm2)/s2 C J D Nm clothes peg height

4 Prelim Examination 2025/4Exp/Physics Paper 1 __________________________________________________________________________________________________ [Turn Over 3 A heavy ball hanging from a cable is held in equilibrium by a chain Which vector diagram shows the three forces acting on the ball? A point of suspension cable heavy ball chain weight of ball weight of ball weight of ball weight of ball tension in cable tension in cable tension in cable tension in cable tension in chain tension in chain tension in chain tension in chain

5 Prelim Examination 2025/4Exp/Physics Paper 1 __________________________________________________________________________________________________ [Turn Over 4 An object falls without air resistance. Its position at equal time intervals is shown by a sequence of dots. Which sequence of dots is correct? A B C D direction of movement direction of movement direction of movement direction of movement

6 Prelim Examination 2025/4Exp/Physics Paper 1 __________________________________________________________________________________________________ [Turn Over 5 A spacecraft is launched vertically. The velocity-time graph of the motion of the spacecraft is shown in the diagram. What is the maximum height reached by the spacecraft? A 25 000 km B 50 000 km C 75 000 km D 100 000 km 6 A ball is dropped from rest at the top of a building. Air resistance is negligible. The velocity of the ball is 14 m/s when it hits the ground. What is the height of the building? A 2.9 m B 9.8 m C 20 m D 40 m time / h Velocity / km/h

7 Prelim Examination 2025/4Exp/Physics Paper 1 __________________________________________________________________________________________________ [Turn Over 7 Four of the gravitational forces that act between objects in the Solar System are listed. P the force on the Moon due to the Earth Q the force on the Earth due to the Sun R the force on the Earth due to the Moon S the force on the Moon due to the Sun Which two forces are a Newton’s third law pair? A P and Q B P and R C Q and S D R and S 8 A car is at rest by a red traffic light. When the light changes to green, the car starts moving. The