Question

According to Newtons second law of motion, the sum of the forces that act on an object with a mass (m) that moves in an acceleration (a) is equal to m times

a. An object whose mass in 80 grams has an acceleration of 20 meters per seconds square.What calculation will give us the sum of the forces that act on the object, in Newton’s (which are kg×m/s²)?
A. 80 × 20
B. 80 × 1000 × 20
C. 80/1000 × 20
D. 80/60^2 × 20
Which of the above

Answer 1

The sum of the forces acting on an 80-gram object with an acceleration of 20 m/s² is calculated by converting the mass to kilograms and then using Newton's second law of motion, giving 1.6 N.

Step-by-step explanation:

According to Newton's second law of motion, the force (F) on an object is equal to the mass (m) of the object multiplied by its acceleration (a). In this case, an object with a mass of 80 grams (which needs to be converted to kilograms since the unit of force, the newton, is expressed as kg·m/s²) has an acceleration of 20 m/s². To calculate the sum of the forces acting on the object, we use the formula: F = m × a

However, we first need to convert the mass from grams to kilograms by dividing it by 1000: m (in kg) = 80g / 1000

Then, compute the force: F = (80/1000 kg) × (20 m/s²) = 1.6 N

Thus, the correct calculation to give us the sum of the forces acting on the object is option C, which is: 80/1000 × 20