7a. [4 marks] Cars I and B are on a straight race track. I is moving at a constant speed of and B is
initially at rest. As I passes B, B starts to move with an acceleration of.
I passes B
B passes !
1
> 45ms-
> 45ms-1
B
at rest, begins to move
B
At a later time B passes I. You may assume that both cars are point particles.
Show that the time taken for B to pass I is approximately 28 s.

a. are

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

because growing process had stoped after 4-5 year