WORK And Machine Obj (Q1-10): Integrated Science Current WASSCE Questions

Integrated Science Current WASSCE Past Questions: WORK And MACHINE Objective Questions (2016-2019)

I) Questions that occur multiple times means they were repeated over the period under consideration

II) Candidates are expected to spend 50 seconds on each objective question. Candidates are therefore required to spend between 8-9minutes on these 10 questions. Start work now!!

1. A force of 60N was used to raise a load of 300N. Determine the mechanical advantage of the machine
A. 5
B. 60
C. 360
D. 18000

2. Which of the following quantities is/are measured in joules
I. Energy
II. Power
III. Work
A. I only
B. I and II only
C. I and III only
D. I, II and III

See also: FORCES, MOTION And PRESSURE Obj (Q1-10): Integrated Science Current WASSCE Questions

3. Friction in machines
A. Keeping moving parts strong
B. Increases the efficiency of machines
C. Increases the overall cost of using the machine
D. Enable work to be done faster

4. An example of third class lever is
A. Claw hammer
B. Crowbar
C. Cutlass
D. Forceps

See also: MAGNETISM Obj (Q1-10): Integrated Science Current WASSCE Questions

5. A rigid bar that is supported at a point about which turning occur is
A. Lever
B. Pulley
C. Wheel and axle
D. Inclined plane

6. An effort of 120N was used to overcome a load of 80N. What is the mechanical advantage of the system.
A. 0.67
B. 1.50
C. 40.00
D. 200.000

See also: ELECTRONICS Obj (Q1-10): Int. Sci. Current WAEC Questions

7. In a simply machine, the force that overcomes the resistance is
A. Effort
B. Lever
C. Load
D. Pivot

8. The energy possessed by a student on top of a building is
A. Mechanical energy
B. Heat energy
C. Kinetic energy
D. Potential energy

A girl of mass 60kg runs a 100m race 10s.
Use the information to answer questions 9 and 10.

9. What is the speed of the girl
A. 110ms-1
B. 100ms-1
C. 50ms-1
D. 10ms-1

10. Calculate the kinetic energy of the girl.
A. 6000J
B. 3000J
C. 170J
D. 40J

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Answers
1. A
2. C
3. A
4. D
5. A

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6. A
7. A
8. D
9. D
10. B

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