In a college homecoming competition, 16 students lift a sports car.?
While holding the car off the ground, each student exerts an upward force of 400 N. (a) What is the mass of the car in kilograms? (b) What is the weight in pounds?
- Jacob ALv 51 decade agoFavorite Answer
400*16 = 6400N total upward force.
F = ma, therefore
m = F / a, where a is the acceleration due to gravity, 9.8 m/s²
m = 6400 / 9.8 = 653 kg
1 kg = 2.20462262 pounds, so 653 kg = approx. 1440 pounds.
- ?Lv 71 decade ago
6400 N * .2248 lb/N = 1438.72 lb
kg = unit of mass
lb = unit of force
Xkg ≠ Ylb