Question

what determines the gravitational pull?
the sun
mass
volume
acceleration
question 2
1 pts
if a ball is dropped off a cliff, it starts out at 0 m/s. after 1 s, it will be traveling at about 10m/s.
what will happen in 2 s if there is no air resistance?
the ball will accelerate to 10 m/s
the ball will still be moving at 10 m/s
the ball will accelerate to 20 m/s

Explanation:

For the first question, according to Newton's law of universal gravitation, the gravitational pull between two objects depends on their masses. For the second question, in the absence of air - resistance, an object in free - fall near the Earth's surface has a constant acceleration of approximately 10 m/s². Starting from 0 m/s, after 1 s it is at 10 m/s, and after 2 s, using the formula \(v = v_0+at\) (where \(v_0 = 0\), \(a = 10m/s²\), and \(t = 2s\)), it will accelerate to \(v=0 + 10\times2=20m/s\).

Answer:

1. B. mass
2. C. the ball will accelerate to 20 m/s