Physics, 08.03.2021 16:50, payshencec21

Which situation will produce the greatest change of momentum for a 1.0-kilogram cart? A)
accelerating it from rest to 3.0 m/s
B)
accelerating it from 2.0 m/s to 4.0 m/s
applying a net force of 5.0 N for 2.0 s
C)
D)
applying a net force of 10.0 N for 0.5 s

Answers: 3

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answered: Guest

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

answered: Guest

Physical science b final exam bernoulli’smovepowercompound translucent the sun i was having such a pain for this searching every question so i hope i made someone happy

answered: Guest

Hi.the measurement amperes represents the rate at which current flows.it's like the measurement of water flowing through a pipe.~

answered: Guest

Answer;

hot magma rises and pushes up toward the lithosphere, and as it cools it cycles back down toward the core to be heated again.

explanation; convection currents are the circular pathways taken by a fluid that enhances heat transfer by the process known as convection which occurs in fluids.convection currents transfer heat from one place to another by mass motion of a fluid. earth mantle is in a semi-liquid state and behaves like any other fluid, rising up from the bottom of the mantle after becoming hotter and less dense from heat of the earth's core, as the rock loses heat into the earth's crust it becomes cooler and more dense, then sinking back down to the core, then repeating the cycle.

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Which situation will produce the greatest change of momentum for a 1.0-kilogram cart? A)
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