Community post
SmartStudy Physics Quest 004
A glass marble falls from a height of 10 m to the ground. There is negligible air resistance, which of the following remains constant during the fall?
A) Acceleration
B) Kinetic energy
C) Speed
D) Velocity
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More about the quest
Learn some Physics and get rewarded for it by taking part in this SmartStudy Physics Quest.
I will post Physics questions regularly for the quest. There may be a link for you to read, investigate and come up with the correct answer.
To take part, upvote the post and comment the correct answer.
When the post pays out, the first 3 people with the correct answer and who also upvoted, will receive an equal share of the SBD earnings on the post.
Read more about the SmartStudy Physics Quest.
Replies (7)
A. Acceleration
A. acceleration
A. Acceleration.
I'm too late to win, but I guess I'll provide an explanation to why the answer is A from just my brain(I'm bad at physics, don't quote me on anything.
B isn't right because kinetic energy is (mass * velocity2)/2 and velocity increases as it falls down.
C isn't right because as its falling, its getting faster.
D isn't right because velocity is just speed with a direction so it can't remain constant.
That leaves, A, and earth gravity is 9.81 m/s2 and its always constant(or around there).
How wrong was I?
Not wrong at @Rishi556
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