How much force would you need to cause a 20kg object to accelerate in a straight line to 20m/s2?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative

Convection occurs when thermal energy is transferred by the movement of