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, rightward
b. rightward, leftward
c. leftward, rightward
d. leftward, leftward
e. rightward, zero
f. leftward, zero
g. none of these

Explanation:

Step1: Determine velocity direction

Since the object is moving from right to left, the velocity direction is left - ward.

Step2: Analyze acceleration from oil - drop diagram

The oil - drop spacing is decreasing. This means the object is slowing down while moving left - ward. Slowing down implies acceleration is in the opposite direction of velocity. So acceleration is right - ward.

Answer:

c. leftward, rightward