Question

in which of the below cases does an object slow down: A. the velocity and acceleration...

in which of the below cases does an object slow down:

A. the velocity and acceleration vectors point in opposite directions
B. the acceleration is negative
C. the slope in the velocity-vs-time graph is negative
D. velocity and acceleration vector point in the same direction
E. the acceleration is positive
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Answer #1

An object will slow down when the acceleration applied on it is negative. The acceleration is negative when it points in a direction opposite to the velocity. In such case, the slope of v-t graph is negative. So the correct options are:

A. the velocity and acceleration vectors point in opposite directions

B. the acceleration is negative

C. the slope in the velocity-vs-time graph is negative


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