Question

According to Newton’s First Law of Motion, if you roll a ball in a straight line in an open field, what will happen to the ball?

A.
The ball will continue on forever.

B.
The ball will slow down.

C.
The ball will not change its velocity.

D.
The ball will speed up.

Answer 1

Hey! this is one of the last 2 i have thank you for the help too.

Answer 2

im thinking B cuz it wont go on forever and it will change its velocity cuz its going forward unless it rolls backwars and D i dont think it will speed up

Answer 3

please why do you think is B?

Answer 4

Because I think that it will slow down eventually and the other answers to me don't seem to work with it. 1. Because the ball can't roll on forever. 2. I don't think the ball will speed up on a straight field because it isn't on a slope it's straight. 3. The ball WILL change it's velocity because it is going forward opposed to rolling back which will not change the velocity. 4. The ball WILL slow down because eventually it will run out of force.

Answer 5

I think this: after launch, on your ball acts the friction force due to atmosphere and due to contact with road, whose effect is to slow down your ball, so?

Answer 6

Hmm well I mean how would it speed up? What would make it speed up?

Answer 7

I don't think that your will ball speed up, since friction force is acting on it, and friction force is Always opposite to the motion of your ball, so your ball slow down

Answer 8

oops that your ball will spedd up...

Answer 9

Oh

Answer 10

Alright one more question.

Answer 11

wait no this one is easy but ill still show you
What will happen to the passengers sitting on a train if the train comes to a sudden stop?

A.
Their bodies will move forward.

B.
Their bodies will move backwards.

C.
They will feel a force pushing them upward.

D.
They will feel a force pushing them downward.
I say A because I literally just read about Inertia Forces which means a car starts, your body gets pushed backwards and when it stops you go forward. :D

Answer 12

please note that if e can neglect friction, then on your ball no friction forces act, so by the first Newton law, your ball will not change its velocity

Answer 13

so, my answer is:
1) if we cn neglect friction, then C.
2) if we take into account the friction, then B

Answer 14

But it should be A they can't be pushed upward

Answer 15

yes! that's right!

Answer 16

oh and also the question with the 10 force and 8 force it moved right? correct?

Answer 17

yes!

Answer 18

I'M GETTING IT! :D

Answer 19

o! I think that friction can be neglected so A.

Answer 20

I turned it in and got 80%! :D I missed one doe XD

Answer 21

Thank you for the help though! :D i'll let you know if I need help with other questions in the near future! :D

Answer 22

ok!

Answer 23

Thank you!