Question

mission kc5: oil drop representations
an object is moving from right to left. its motion is represented by the oil drop diagram at the right. this object has a ____ velocity and a ____ acceleration.
a. rightward, leftward
b. leftward, rightward
c. rightward, zero
d. leftward, zero
e. rightward, rightward
f. leftward, leftward
g. none of these

Explanation:

Step1: Determine the direction of velocity

Velocity is in the direction of motion. Since the object is moving from right to left, the velocity is left - ward.

Step2: Analyze the acceleration from the oil - drop diagram

The spacing between the oil - drops is decreasing. This means the object is slowing down. When an object is slowing down, acceleration is in the opposite direction of velocity. So acceleration is right - ward.

Answer:

b. leftward, rightward