The force acting on an object is directly proportional to its mass. If a force of 10 N is required to move an object of mass 2 kg, what force (in newtons) is needed to move an object of mass 5 kg?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 25.
F ∝ m ; F = k × m
k = 10 ÷ 2 = 5 N/kg
For m = 5 kg: F = 5 × 5 = 25 N