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.

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.

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.