Chanices drives her scooter 7 kilometers north. she stops for lunch and then drives 5 kilometers east. what distance did she cover? what was her displacement

Distance covered was 12km, 7km then another 5 so just 7+5. As there is a right angle, we can use Pythagoras’ theorem to figure out the displacement. This would be x^2 = 7^2 + 5^2, so x=8.6km

The density of the block of iron is lees than the density of mercury but the density of the block of iron is greater than the density of water