The above free body diagram represents the motion of a toy car across a floor from left to right. the weight of the .5 kg car is about 5 n and it is being pushed with 20 n of pressure. if there is 10 n of friction across the floor, what is the net force acting on the car?

a
since the car is moving to the right, the normal force is balancing the weight and the net force is 10 n, right.

b
friction and the normal force are acting opposite the applied force, so the net force is 5 n, right.

c
the net force is 35 n, the addition of each of the forces acting on the car and causing it to accelerate.

d
net force is equal to mass times acceleration so the net force is .5 kg times 9.8 m/s2 or roughly 5 n.

A

Since the car is moving to the right, the Normal Force is balancing the Weight and the Net Force is 10 N, right.

Explanation:

as the answers says, the only two forces in the y axis are the normal force and the weight, and they balance each other. On the x axis, you have 20N to the right and the friction is a force that opposes the movement, so the 10N are to the left. The net force is 20 - 10 = 10N.

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

mistakes are ok