physics

[marsh dust]

i need help with task 2.39 a. how do i draw the situation with all forces included?

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[manic kayak]

i don’t know if this is much about forces

i would talk about inertia and newton’s first law

[marsh dust]

oh ok

[marsh dust]

what is inertia

[manic kayak]

the phenomenon that newton’s first law describes

[marsh dust]

aa ok

[marsh dust]

but why newton’s 1 law

[eager wave]

newton's first law talks about inertia

theres not really a set reason why newton has three laws, or why newton's 1st law is not the law of acceleration, and etc

[marsh dust]

so the person actually wants to stay at rest, but when the person suddenly brakes the result would be that the person gets pushed forward?

and because the person doesn’t have a seatbelt on it will be pushed forward till it get stopped by some other forces?

@manic kayak

@eager wave

[manic kayak]

the person wants to continue moving forwards

when the car brakes, the person continues moving forwards

while the rest of the car stops

[marsh dust]

yes but the person sits still in the car, hence why it wants to stay at rest

[manic kayak]

but the person in the car is moving when the car is moving?

[marsh dust]

oh yess

my bad

so the person wants to be in a certain motion

so when the car suddenly brakes, we get pushed forward

and thats why we need seatbelt

so that another force can stop us

[manic kayak]

yes

[marsh dust]

thanks

[marsh dust]

would u say thats enough to write as an answer?

[marsh dust]

but what should i write on b

the person will move forward with a certain speed till it get stopped by the wall which would reduce the speed to 0

i think

@manic kayak

[manic kayak]

can you not ping me

[marsh dust]

yes i am sorry

but u can also just tell if you don’t have an answer

its fine

[manic kayak]

i don't know what your physics teacher wants

[manic kayak]

but i would say that this is correct

[marsh dust]

ok

+close