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Q: What is needed to give a large boulder a larger acceleration?
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A geologist estimates that a large boulder weighs 7840 N What should he estimate the mass of this boulder to be?

Weight is the force due to gravitational acceleration that acts on a mass.As such to find the mass you must divide the weight by the gravitational acceleration.In this specific example if we assume that gravatational acceleration is equal to 9.8 m/s/s then the mass equals:7840 / 9.80Mass = 800 kg.


Which of these would you expect to require the most force increasing acceleration of a small mass or decreasing acceleration of a small mass?

Any amount of force, no matter how large or small, will increase or decrease the speed of any mass, no matter how large or small. But if you specify how much you want the object's speed changed and how quickly you want it done, then you have specified the acceleration you want. In that case, the larger the mass is, the more force it will take to accomplish that assignment.


How do the accelerations compare if the same force is exerted first is on the large mass and then on a small mass?

Gravitationally, the same force does not affect a small mass and a large mass.The small mass is acted upon by a smaller gravitational force, and the large massis acted upon by a larger gravitational force. The result is that the small mass andthe large mass fall with the same acceleration, and meet the ground with the samespeed. During the fall, onlookers typically nudge each other and remark to each other:"My word! The large mass weighs more than the small mass!" They are correct in theirimpression, and the scientific reason behind their perspicacious observation is the factthat the gravitational force acting on the large mass is greater than the gravitationalforce acting on the small mass.


What is the difference between a small momentum and a large momentum?

The larger the momentum, the harder it will be to stop it. Thus, the larger the force needed to decelarate the object. Since momentum is directly proportional to the velocity, the larger the momentum, the larger the velocity.


How do you move a boulder with a simple machine?

A large LEVER can move a boulder by increasing your lifting power. With the fulcrum closer to the boulder and your force exerted farther away, you can lift it. The lever changes a small force exerted over a long path into a large force exerted over a small path.