# This tricky question! (1 Viewer)

#### klee98

##### Member
This question is taunting me, i chose the blue one.
I know the question looks pretty darn obvious what it wants, but the way it was phrased though!!!
Here's my POV: Draw the magnitude of a ball dropped in a trolley by a scientist who's in the trolley relative to the scientist. Plus, its travelling in uniform acceleration, so its an inertial frame, hence vertical.

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#### turntaker

##### Well-Known Member
This question is taunting me, i chose the blue one.
I know the question looks pretty darn obvious what it wants, but the way it was phrased though!!!
Here's my POV: Draw the magnitude of a ball dropped in a trolley by a scientist who's in the trolley relative to the scientist
(They are all in the trolley!!)

Lol doing physics at 1:30am?
Gg

Anyway, this is pretty basic. (Maybe you need sleep)

The scientist in the trolley which means he is in a inertial frame of references (where you are traveling in uniform motion )
Laws of physics would be same in the trolley so the ball will drop as normal.

#### klee98

##### Member
OMG yes, i do need sleep!!
i thought uniform acceleration = uniform velocity

#### turntaker

##### Well-Known Member
OMG yes, i do need sleep!!
i thought uniform acceleration = uniform velocity
Oh wait. I thought it said uniform speed and not uniform acceleration.

I need sleep too

This changes the answer. The ball doesn't go straight down.
The red path is the correct answer

#### Parvee

##### (╯°□°）╯︵ ┻━┻
uhm its not an inertial frame of reference if its accelerating

#### turntaker

##### Well-Known Member
uhm its not an inertial frame of reference if its accelerating
M8 Its 2am give me a break

#### Parvee

##### (╯°□°）╯︵ ┻━┻
and since its accelerating it will be the red one

#### turntaker

##### Well-Known Member
and since its accelerating it will be the red one
I pretty much said this

#### Crisium

##### Pew Pew
Ok so as the acceleration is increasing at a steady rate this would mean that the scientist is in a non-inertial frame of reference.

Therefore the ball will follow a trajectory in an opposite direction to that of the direction of travel (i.e. Since it is travelling to the right, the ball will follow a trajectory to the left).

Hope this makes sense

#### Librah

Ok so as the acceleration is increasing at a steady rate this would mean that the scientist is in a non-inertial frame of reference.

Therefore the ball will follow a trajectory in an opposite direction to that of the direction of travel (i.e. Since it is travelling to the right, the ball will follow a trajectory to the left).

Hope this makes sense
Dunno if you worded this weirdly or not, but bolded part isn't always true. In a decelerating vehicle the ball will appear to move forward.