Question

"An object moves in a straight line and is speeding up at a rate of (10 , {m/s}^2). If the applied force on the object is (7 , {N}) in the direction of motion, what is the mass of the object?

a) (0.7 , {kg})
b) (0.7 , {g})
c) (0.7 , {kg})
d) (0.7 , {g})"

Answer 1

The mass of the object is calculated using Newton's second law of motion, which states force equals mass times acceleration. By rearranging the formula and substituting the known values, the mass is found to be 0.7 kg.

Step-by-step explanation:

The question seeks to find the mass of an object that is accelerating, under the application of a known force and acceleration rate. According to Newton's second law of motion, force (F) is equal to mass (m) multiplied by acceleration (a), expressed as F = ma. In this problem, the object is speeding up at 10 m/s2 (acceleration), and a 7 N force is applied in the direction of motion.

To find the mass, rearrange the formula to m = F/a. Plugging in the values gives m = 7 N / 10 m/s2 = 0.7 kg. Therefore, the correct answer is c) (0.7, kg).