# On which object will Earth’s gravity act with the greatest magnitude?(1 point)

## (1) On which object will Earth’s gravity act with the greatest magnitude?

a piano

(2) Why does a beach ball weigh less than a bowling ball?
The beach ball is less strongly attracted to Earth.

(3) Which statement about gravitational attraction is correct?
All objects with mass experience gravitational attraction.

(4) A spacecraft flies within 500,000 km of each of these planets. Based on its mass, which planet would gravitationally attract the spacecraft the least?
Mars

(5) A student conducts an investigation to study the effect of gravity on objects of different masses. Which step should be first in the investigation?
Find objects of different masses and measure them.

(6) A science class is conducting an investigation to see how gravity affects objects of different masses. They drop three balls from the same height. They time how long it takes the balls to hit the ground. What are the students comparing?
the time it takes for each ball to fall

(7) A hammer and a feather are dropped from the same height. Imagine that there is no resistance to the objects' motion in air. Which value will be different for the two objects?
the downward pull of gravity

(8) A coin (5 grams), a small parachute (21 grams), and a hammer (710 grams) are all dropped from a height of 10 meters. The coin and the hammer take about the same amount of time to fall. Which statement describes the time it takes for the parachute to fall?
It takes longer to fall because it experiences greater air resistance.

(9) Which object would have the slowest speed at terminal velocity?
a 50-kilogram block with a large parachute

(10) How does an open parachute slow a skydiver’s fall?
The parachute increases the force opposing gravity.

(11) A science class is planning an investigation about gravity and objects on Earth. In three to four sentences, explain the steps the class should take to provide data to help them make a conclusion about the effect of gravity on objects of different masses.
(change answer into own words) Get objects with different masses, time the falls.

(12) Two skydivers of different masses jump from a plane. In three to five sentences, explain how their falls compare, including the effects of gravity, mass, and air resistance.
(change answer into own words) The skydiver with more mass would be more strongly affected by gravity, but air resistance would slightly cancel that out.

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## Yeah, @noname is correct. The update for the test in 2023 is:

1.) a piano
2.) The beach ball is less strongly attracted to Earth.
3.) All objects with mass experience gravitational attraction.
4.) Mars
5.) Find objects of different masses and measure them.
6.) the time it takes for each ball to fall
7.) the gravitational attraction between the Earth and the objects
8.) It takes longer to fall because it experiences greater air resistance.
9.) a 50-kilogram block with a large parachute
10.)The parachute increases the force opposing gravity.
11.) MY ANSWER (I would change yours): The class should first decide on the objects with different masses they will use in the investigation. They should then conduct a controlled experiment in which they drop each object from the same height and measure the time it takes for each object to fall. They should then finally analyze their data and draw conclusions about the effect of gravity on objects of different masses.
12.) MY ANSWER (I would change yours): The skydiver with more mass would be more strongly affected by gravity, but air resistance would not affect them.

## i think they changed number 7, here's the answer

the gravitational attraction between the Earth and the objects