1. a 3 kg lunch box is pushed across the lunch table. the acceleration of the lunch box is 2.0 m/s2. what was the net force applied to the lunch box? 2. find the weight of a 10 kg rock. remember, acceleration due to gravity is -9.8 m/s2. show your work.

(1)

6 Newtons

Explanation:

The net force is (mass) x (acceleration) = (3 kg) x (2.0 m/s^2) = 6 N

(2)

-98 Newtons

Explanation:

Weight (force due to gravity) is (mass) x (gravitational acceleration) = (10 kg) x (- 9.8 m/s^2) = -98 N

The negative sign due to negative acceleration indicates the gravitational force pointing in the negative direction within the defined coordinate system.

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.