Find the actual speed and height at 1.5s (B)

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2

d) physical means can be used to separate the components of air.

it is a negative acceleration

not too sure thinking all accelerations are pointed down