PH-164
Resultant force and F = ma
Physics · Secondary 3 · Hard · Resultant force and F = ma
Two blocks, P of mass 2 kg and Q of mass 4 kg, are in contact on a smooth horizontal surface. A horizontal force of 18 N pulls on P so that both accelerate together. What is the magnitude of the contact force exerted by Q on P?
- 12 N
- 6 N
- 9 N
- 18 N
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