A little physics would help here.

Why don’t animators use well-known physics equations to make motion more believable?
Mosasaur_Feeding_Show
Check out Rhett Alain’s  plot comparing the falling Mosasaur from Jurassic World with a falling ball.  This isn’t complicated – it’s simple mechanics, what you’d learn in high school physics.
Falling Ball vs. Falling Masosaur in Jurassic World

From Plotly by Rhett Allain

What would Galileo say?!

I don’t want to pick on Jurassic World – this is a problem endemic to all movie animation. Superheros jumping as if their bodies were weightless and elastic. Buildings being destroyed by minor explosions. Bodies flying around from the impact of a gunshot.  Heroes outrunning fireballs.  I know it’s fantasy – but we have a lifetime of experience with gravity on this planet, and our eyes know in a fraction of a second when we see an object falling incorrectly. This doesn’t enhance fantasy – rather, it breaks that beautiful meditative spell that movies can put us under.  Break it enough times, and you’ve lost your audience. They’ll never believe what they’re seeing in that gut-instinct, “eyes of a child” kind of way.
Can you imagine how refreshing it would be to see convincing special effects motion? And it wouldn’t be that hard. Just crack open a physics textbook. Hey, if you can learn how to use studio-quality animation software, you can learn how to do a little high school physics.
KHH

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The Mechanical Universe (this is Volume I of the textbook we used for Freshman Physics at Caltech)

Mechanical Universe

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