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3 years ago

According to Newton's 2nd law of motion, Jim can throw - with equal amounts of force applied - a _ farther than a _.

Physics

2 answers:

PtichkaEL [24]3 years ago

5 0

Answer:

all of the above

Explanation:

Remember that the second law of newton states that the acceleration of an object depends on two things, the net force applied to the object and the obeject´s mass, so if two objects are applied the same force, but have different mass their acceleration will be different, and since in all of the options the first object has less mass than the second, the first object will always travel farther than the second, making the option All of the above the correct one.

kodGreya [7K]3 years ago

3 0

The answer is All of the above

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2 years ago

A block of weight 1200N is on an incline plane of 30° with the horizontal, a force P is applied to the body parallel to the plan

pshichka [43]

Answer:

a) P = 807.85 N, b) P = 392.15 N, c) P = 444.12 N

Explanation:

For this exercise, let's use Newton's second law, let's set a reference frame with the x-axis parallel to the plane and the direction rising as positive, and the y-axis perpendicular to the plane.

Let's use trigonometry to break down the weight

sin θ = Wₓ / W

cos θ = W_y / W

Wₓ = W sin θ

W_y = W cos θ

Wₓ = 1200 sin 30 = 600 N

W_y = 1200 cos 30 = 1039.23 N

Y axis

N- W_y = 0

N = W_y = 1039.23 N

Remember that the friction force always opposes the movement

a) in this case, the system will begin to move upwards, which is why friction is static

P -Wₓ -fr = 0

P = Wₓ + fr

as the system is moving the friction coefficient is dynamic

fr = μ N

fr = 0.20 1039.23

fr = 207.85 N

we substitute

P = 600+ 207.85

P = 807.85 N

b) to avoid downward movement implies that the system is stopped, therefore the friction coefficient is static

P + fr -Wx = 0

fr = μ N

fr = 0.20 1039.23

fr = 207.85 N

we substitute

P = Wₓ -fr

P = 600 - 207,846

P = 392.15 N

c) as the movement is continuous, the friction coefficient is dynamic

P - Wₓ + fr = 0

P = Wₓ - fr

fr = 0.15 1039.23

fr = 155.88 N

P = 600 - 155.88

P = 444.12 N

6 0

3 years ago

Can you answer the question

Dominik [7]

Can u show the whole question plz

3 0

3 years ago

Why is it cold in the mountains if heat rises?

hjlf

Answer:

look at explanation

Explanation:

If heat rises, then why is it so cold at the top of a mountain? Heat does indeed rise. More specifically, a mass of air that is warmer than the air around it expands, becomes less dense, and will therefore float atop the cooler air. ... So when warm air rises, it cools off.

6 0

3 years ago

I NEED HELP PLEASE, THANKS! Describe each Newton Law. :)

Alex

Explanation:

1st- states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction.

2nd- states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. (most important law)

3rd- states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. (law of action/reaction)

6 0

3 years ago

According to Newton's 2nd law of motion, Jim can throw - with equal amounts of force applied - a _____ farther than a _____.

According to Newton's 2nd law of motion, Jim can throw - with equal amounts of force applied - a _ farther than a _.