CIE iGCSE Co-Ordinated Science P1.6.2 Work Exam Style Questions Paper 1
Question
A crane does work on a load by lifting it vertically upwards.
Which action decreases the work done on the load?
A lifting the load higher
B lifting the load more slowly
C reducing the mass of the load
D using a more powerful crane
▶️Answer/Explanation
Ans :C
Question
A student lifts a box vertically from the floor and places it on a table.
Which two quantities must be known in order to calculate the work done on the box by the student?
A the force used to lift the box and the height of the table
B the force used to lift the box and the time taken to lift the box
C the volume of the box and the height of the table
D the volume of the box and the time taken to lift the box
▶️Answer/Explanation
Ans :A
Question
A student walks up some steps at constant speed.
Which two quantities provide enough information so that the useful power produced by the student can be calculated?
A the weight of the student and the time taken
B the weight of the student and the total height of the steps
C the work done by the student and the time taken
D the work done by the student and the total height of the steps
▶️Answer/Explanation
Ans : C
Question
A horizontal force acts on a block.
The block moves in the direction of the force.
Which two quantities affect the work done by the force on the block?
(A) magnitude of force and distance moved
(B) magnitude of force and mass of block
(C) magnitude of force and volume of block
(D) magnitude of force and weight of block
▶️Answer/Explanation
Ans: A
Question
An engine is doing work on a car as the car moves along a road. Which two changes must result in less work being done on the car by the engine?
A. decreasing the engine’s force on the car and decreasing the distance moved by the car
B. decreasing the engine’s force on the car and increasing the distance moved by the car
C. increasing the engine’s force on the car and decreasing the distance moved by the car
D. increasing the engine’s force on the car and increasing the distance moved by the car
▶️Answer/Explanation
Answer: A. decreasing the engine’s force on the car and decreasing the distance moved by the car
Explanation: Work done = force × distance. Decreasing both the force and the distance will result in less work being done.
Question
To calculate the work done by a force on an object, the size of the force must be known. Which other quantity must be known?
A. the acceleration of the object in the direction of the force
B. the distance moved by the object in the direction of the force
C. the final speed of the object
D. the time for which the force acts on the object
▶️Answer/Explanation
Answer: B
Explanation: Work done is calculated as force × distance moved in the direction of the force. Therefore, the distance moved is required.