A bus travelling at a steady speed takes 2and half hours for a certain journey how long will a car take if it travels at three times the speed of the bus

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

Anyone know? is appreciated! will mark brainliest if correct!

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms