Question

Based on the graph, which is true about the motion of this object?



A.
The object is accelerating at a variable speed.

B.
The object is experiencing negative velocity; it is speeding up.

C.
The object is experiencing negative velocity; it is slowing down.

D.
The object is experiencing constant velocity and constant speed.

Answer 1

@Nurali

Answer 2

@amistre64

Answer 3

hmm, and the graph?

Answer 4

how do i add a graph

Answer 5

if you have it as a picture file, theres an 'attach picture' button

Answer 6

if you can get a screenshot or picture of it in some way, you should be able to upload it

Answer 7

did you get it

Answer 8

its there yes

Answer 9

can you help now

Answer 10

i might be able to. what do you know as far as formulas or just some intuition for this problem?

Answer 11

the object was going fast

Answer 12

is it C

Answer 13

it is not D

Answer 14

if im reading it right, this charts position over time,

if we imagine a vector (an arrow) that is tangent to the curve: ... we would see that the arrow is pointing down (from left to right) indicating a negative velocity

as the we move more to the right, the arrow becomes more level, telling us that the speed of it all is slowing down over time.

C makes the most sense to me as well

Answer 15

cheers thank you

Answer 16

good luck with it :)

Answer 17

how do i give you a medal

Answer 18

and can you help me on somemore

Answer 19

if theres not a 'best response' button to the right of all my posts try refreshing your browser.

ah you found it

Answer 20

i can try, but physics in general is not my strongest subject.

Answer 21

ok

Answer 22

A marble with a mass 0.01kg is accelerating across an ice rink at 1 m/s2.

What is the amount of force being applied to the marble according to Newton's second law?

A.
1.02 × 10-3 N

B.
100 N

C.
0.01 N

D.
0.098 N

Answer 23

we should prolly start by stating the formula associated with newtons second law, the rest is just simple math

Answer 24

i never learned the fourmla

Answer 25

but is it A it looks like the only fourmla one

Answer 26

if you dont recall the formula, can you recall newtons second law?

Answer 27

one sec

Answer 28

nope

Answer 29

then to help you learn it better, i am going to ask you to find newtons second law either in your course materials, or by using google.

once we have some idea as to what it is, then we can address the solution to the problem.

Answer 30

Which defines displacement, a value required to calculate average velocity?

A.
the mass of the object and the direction of the force on the object

B.
the distance the object traveled and the time it took to travel

C.
the amount and direction of force acting on the object

D.
the distance the object traveled and the direction of travel

i know displacement is time and distance so is it B

Answer 31

im torn between B and D on that one