How does mass and weight affect gravity?

Explanation:

To start off you need to know that the mass of an object never changes. But gravity does. Think about it life this. Gravity is less on the moon but more on earth, therefore, gravity can change, but mass can't. Now its almost the same as weight because weight changed based upon the gravity. On the moon you weigh only about 10 pounds, on earth, you way much more, and so on.

To calculate the formula you have to do Mass×Gravity which can calculate into Weight.

~Evie weight = mass * gravity

We know that mass never changes, but the weight changes depending on the gravitational pull.

Explanation:

Mass and weight affect gravity because weight is a measure of the force of gravity acting on an object, while mass is a measure of how much matter it contains. The gravitational force is equal to the mass of the objects and inversely proportional to the square of the distance between them.

Source for more information: https://study.com/academy/lesson/newtons-laws-and-weight-mass-gravity.html#:~:text=In%20summary%2C%20mass%20is%20a,gravity%20acting%20on%20the%20object.&text=The%20amount%20of%20gravity%20is,the%20distance%20between%20the%20objects.

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.