a 0.15 kg baseball has a momentum of 0.78 kg*m/s just before it lands on the ground. What was the ball's speed just before landing?

Answers

Answer 1

The change in momentum is Δp= 0.028 kg m/s
Explanation:
An impulse describes a change in momentum. The change in momentum of an object is its mass times the change in its velocity.
The change in moment is given by the expression below
Δp=m⋅(Δv)=m⋅(vf−vi) .
Given data
mass m= 0.140-kg
initial velocity vi= 120 m/s
final velocity vf= 1 m/s
substituting we have
Δp=m⋅(Δv)=0.14⋅(1−1.2)
Δp=m⋅(Δv)=0.14⋅(-0.2)
Δp= 0.028 kg m/s
The change in momentum was found to be Δp= 0.028 kg m/s

Answer 2

The speed of the ball (i.e the velocity since it has a direction in a specified time) is 5.2 m/s before it landed.

From the given information,

the mass of the baseball = 0.15 kgthe momentum of the baseball = 0.78 kg m/s

For an object moving in a direction in a specified time, the momentum of the object is usually directly proportional to the mass and velocity.

∴

Momentum = mass × velocity

velocity = momentum/mass

velocity = 0.78 kgm/s ÷ 0.15 kg

velocity = 5.2 m/s

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(I'm new to this website so Im just getting the hang of it)

Answers

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Voyager 2 is a space probe, launched in 1977, to study the outer planets, it will continue to travel through space for thousands of years without stopping, and it travels on Newton's first law of motion.

What is the significance of Newton's first law of motion?

It is of great importance as it is used to predict the behavior of objects in motion like Voyager 2 and to understand performance in sports such as skiing and skating etc., and help in improvement. It is also helpful for the development of new technologies for the space program and in the understanding of mechanical systems such as vehicles, machinery, etc.

Hence, Voyager 2 is a space probe, launched in 1977, to study the outer planets, it will continue to travel through space for thousands of years without stopping, and it travels on Newton's first law of motion.

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Explanation:

Answer:

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Answers

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7) HELP ASAP PLZ PLZ HELP ME
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I believe that the answer is B

ILL GIVE BRAIYIST

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Answer:

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EXPLAIN:

Radiation

All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat. Radiant energy spreads out from its source in all directions. ... GAMMA RAYS have more energy than XRAYS, Radio waves, microwaves and ultraviolet waves all have longer wavelengths than visible light. Both X rays and gamma rays have higher frequencies than ultraviolet rays.

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Answers

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Answers

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Explanation:

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Answers

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