Position vs. Time Graphs Position versus time graphs for boats traveling along a narrow channel are shown below. The scales on
both axes are the same for all of these graphs. In each graph, a point is marked with a dot.

a) For which of these, if any, is the position zero at the indicated point?

b) For which of these, if any, is the position negative at the indicated point?

c) For which of these, if any, is the velocity zero at the indicated point?

d) For which of these, if any, is the velocity negative at the indicated point?

answer; i believe the correct answer is (40,000 j) good luck

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg