Question

A 12 kg object sits on a horizontal surface. How much force is needed to give the object an acceleration of 4.5m/s ²?

a) 12 N

b) 18 N

c) 40 N

d) 54 N

Answer 1

The force needed to give an object an acceleration of 4.5m/s² is 54N.

Step-by-step explanation:

To calculate the force needed to give an object an acceleration, we can use Newton's second law of motion which states that force is equal to mass multiplied by acceleration (F = ma). In this case, the mass of the object is given as 12 kg and the desired acceleration is 4.5 m/s². Plugging these values into the equation, we get:

F = ma = 12 kg * 4.5 m/s² = 54 N

Therefore, the correct answer is d) 54 N.