The scale on a map is 1 : 25000

how many kilometers on the ground is represented by 9cm on the map?

0.45 km of ground is represented as 9 cm on the map.

Step-by-step explanation:

A map has a scale of 1:25000. This means that 1 cm on the map is 25000 cm in real life, which is 250 m or 0.25 km.If we divide 4.5 km by 0.5 km we get 9, so the distance on the map must be 9 cm. working out what 1 cm on the map is equivalent to as a real life distance.

853.3

step-by-step explanation:

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²