Question

A net force acting on a 5.0 kg box produces an acceleration of 4.2 m/s2. What acceleration, to the nearest tenth of a m/s2, will the same net force cause on a 2.8 kg box

Answer 1

The acceleration that the net force will cause is 7.5 m/s²

To solve this problem, first, we need to find the net force.

⇒ Equation:

F = ma................ Equation 1

⇒ Where:

• m = mass of the box
• a = acceleration of the box

From the question,

⇒ Given;

• m = 5.0 kg
• a = 4.2 m/s²

⇒ Substitute these values into equation 1

• F = 5×4.2
• F = 21 N

We also use the same equation 1 to find the acceleration that the net force will cause to a box of mass 2.8 kg.

⇒ make a the subject in equation 1

• a = F/m................. Equation 2

⇒ Substitute the appropriate values into equation 2

• a = 21/2.8
• a = 7.5 m/s²

Hence, The acceleration that the net force will cause is 7.5 m/s²

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