Which does a reference point provide? select two options
d a position from which to measure future distance
a set of standard units for measuring displacement
da standard method for evaluating variables
da method for determining the speed of an object
a way to detect an object's motion

The reference points provide as follows:

Option A, and E

Explanation:

The reference points are the standard points or we can say the origin point of the graph. Based on the reference points, the measurements in the graph in x-axis and y-axis can be done. Similarly, reference points are those which helps in measuring displacement as the starting point is always considered as the reference point.

Even in most of the experiments, standard or reference points are kept to maintain the accuracy and precision of the obtained results. So it can also be a standard point for finding a way to detect an object’s motion and speed as well as position to measure displacements.

Options A and E, like the person above said.

Explanation:

Used their answer, and got a 100% on my quiz! So yes, this is the right answer! Right on edg2020!

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

im not exactly sure but i think its b!