Study the speed-time graph given below and answer the following questions:
1. What type of motion is represented by OA, AB, and BC respectively?
2. Find the acceleration and de-acceleration of the body.
3. Find the total distance traveled.

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.

v=ir = 3x15 =45 v

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.