Question

What should a graph of the velocity vs time look like if it shows an object moving toward the motion detector at a constant speed? a. An upwards curved parabola.
b. A downwards curved parabola.
c. A straight line with zero slope.
d. A straight line sloping upward.

Answer 1

Answer:

option C

Explanation:

the correct answer is option C.

Graph between velocity time which shows the constant velocity is straight line  with slope zero.

constant velocity means velocity is not changing with respect to time hence this condition will be only when graph is straight line with slope zero.

area under velocity time graph shows the displacement of the object.

And where as slope of velocity time graph show acceleration of the object.

Answer 2

Answer:c

Explanation:

Given

Object moving towards the motion detector at a constant speed

Constant speed indicates that there is no acceleration .

As the object is moving in a straight line therefore its velocity is same and do not changes with time

thus the correct option is c i.e. a straight line with zero slope.