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.

when it gains or loses electrons

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2