Verified answer

A) F = ma

1 = 0.1a

a = 10 m/s^2

B) To the left.

C) F = ma

1 = 0.23a

a = 4.3 m/s to two significant figures.

D) To the right.

E) For cart 1:

v = u + at

v = 1.2 - 10t

For cart 2:

v = u + at

v = 0 + 4.3t

Set equal:

1.2 - 10t = 4.3t

1.2 = 14.3t

t = 1.2 / 14.3

t = 0.084 s to two significant figures.

F) v = 4.3t

v = 4.3 * 0.084

v = 0.36 m/s to two significant figures.