JAMB Physics 2009 Objective — Question 7
Question 7 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2009 Objective paper, with the correct answer and a full explanation.
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7. A body of mass 4 kg resting on a smooth horizontal plane is simultaneously acted upon by two perpendicular forces 6 N and 8 N. Calculate the acceleration of the motion.
- A. 2.5 ms⁻²Correct
- B. 3.0 ms⁻²
- C. 4.0 ms⁻²
- D. 4.5 ms⁻²
Explanation
Resultant force Rf = √(6²+8²) = √100 = 10N. a = F/m = 10/4 = 2.5 ms⁻².
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