Albert pushes a 12-kg box across a level floor. he pushes with a force of 49 newtons, and observes that the box accelerates in the direction of his push at a rate of 3 m/s2. what must be the net force acting on the box?

Question

Linda Jarvis

Physics

10 April, 06:54

Albert pushes a 12-kg box across a level floor. he pushes with a force of 49 newtons, and observes that the box accelerates in the direction of his push at a rate of 3 m/s2. what must be the net force acting on the box?

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Answers (1)

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Rayne Campbell · Answer 1

Newton's second law of motion states that the resultant force is directly proportional to the rate of change in momentum. This gives us the formula,

The resultant force (F) = Ma, where m is the mass, and a is the acceleration.

Therefore;

F = 12 (3)

= 36 N

Albert applied a force of 49 N to the box but due to friction force only 36 N of the force made the object to move.

Thus the net force was 36 N