3. The velocity of an object is a measure of its and .

the answer is speed and direction

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.