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?
Since the force of the car is equally distributed among the 16 students, the total force of the car is 16*400=6400N. Now just divide out the acceleration due to gravity, 9.8 m/s^2, and you get part (a)