Author Question: Suppose we imagine the Sun to be about the size of a grapefruit (about 10 cm across). How far away ... (Read 72 times)

bcretired · **on:** Jul 27, 2018

Suppose we imagine the Sun to be about the size of a grapefruit (about 10 cm across). How far away are the nearest stars (the three stars of Alpha Centauri)?

A) 2.5 miles
B) 2,500 miles
C) 250 miles
D) the length of a football field
E) 25,000 miles

Question 2

Suppose an object is moving in a straight line at 50 mi/hr. According to Newton's first law of motion, the object will

A) continue to move in the same way forever, no matter what happens.
B) continue to move in the same way until it is acted upon by a force.
C) continue to move in a straight line forever if it is in space, but fall to the ground if it is on Earth.
D) eventually slow down and come to a stop.