Question

Which of the following is MOST useful to scientists in measuring the size of asteroids?
A) The speed at which the asteroid is traveling.
B) The location of the asteroid in the Solar System.
C) The gravitational effect when spacecraft flies close to the asteroid.
D) The composition of the asteroid.

Answer 1

Answer:c-The gravitational effect when spacecraft flies close to the asteriod

Explanation:

Gravitational effect on the spacecraft gives an estimate that how big is the asteroid by experiencing its gravitational pull.

The amount of extra thrust required to maintain the trajectory of the spacecraft during its motion hints at the scientist about the size of the asteroid.

Gravitational pull is directly proportional to the mass of object so greater the mass, greater will be the pull.

Answer 2

Answer:

C

Explanation:

The gravity of a planet, or in this case an asteroid, is determined by two factors: it's mass and its size. The bigger the mass, the stronger the gravity is. But the bigger the size of the mass is, the smaller the gravity is, because of the distance from the center of the mass. As you can see by measuring the gravitational effect when a spacecraft is close to an asteroid can help determine its size.