Question

A painter accidentally drops a can of paint from a high scaffold. How far has the can fallen after 4.0 s?
a.
-50 m
c.
-112 m
b.
-78 m
d.
-27 m

Answer 1

is this all the information given ?

Answer 2

yes, sadly. I am taking online courses. They really don't explain anything. I just take pretests and hope to pass them or i go through a pointless lesson watching videos of people who cannot explain very well.

Answer 3

i don't know, there is no way this cn be solved with this info given

Answer 4

And no information is given before pretests.

Answer 5

Its all over Freefall.

Answer 6

Most i can tell you.

Answer 7

at least i can't
all we have is

t = 4s
g= -9.8m/s^2

Answer 8

I've got a freefall equation i found just now we may be able to use.

Answer 9

V = sqrt(initial Velocity^2 + 2 x acceleration x distance)

Answer 10

Here you go: d=Vot+1/2at^2 that's the formula

Your initial velocity is 0ms/ Starts at rest, your acceleration is 9.81m/ss. Plug in and you should get the answer. 78.4 round it up to 78

Answer 11

it's very simple:
$$h=\frac{gt^2}{2}$$

Answer 12

did u drived that from some other equation ? @Fifciol

Answer 13

Thank you @Issy14 and @Fificiol But I'll try both to see what i get.

Answer 14

Okis, you are welcome!

Answer 15

@Issy14 Quick question, i'm new to those acronyms. Which ones plug in where and what are they called?

Answer 16

ok, Vo is initial velocity. so there you plug in 0m/s because the paint wasn't moving before it fell down, therefore it was at rest. d= 0m/s + 1/2 (9.81m/ss)(4)^2

Answer 17

Acceleration in this case is 9.81m/ss its going towards the earth and with gravity which is 9.81 therefore is positive.

Answer 18

From the equation of motion with constant acceleration
$$x=x_0+v_0t+\frac{gt^2}2{}$$
$$v_0=0 $$ and $$x_0=0$$ if you choose your origin clever enough

Answer 19

@Issy14 Would i multiply 4 and 9.81 by ^2 ???? and then divide by 2?

Answer 20

no, the carat "^" means elevated, as in exponent. so is 4^2 = 16 then you multiply that by the acceleration which is 9.81m/ss
after you multiply that you divide it by 1/2

Answer 21

Yeah thats what i meant. And ahhh I See.

Answer 22

I got it right with that equation. But hey @RANE Couple of your answers were incorrect XD

Answer 23

I'm glad!! Physics is a funny subject =).

Answer 24

@Issy14 you're telling me! XD

Answer 25

so what is it a b c or d

Answer 26

wait what equation did you use? @therealjuicyj