A small package is attached to a helium-filled balloon rising at 2 m/s. The package drops from the balloon when it is 14 meters above the ground. What is the velocity of the package just before it hits the ground?

Answers

Answer 1
Answer:

The velocity of the package just before it hits the ground is 16.7 m/s.

What is velocity?

The change of distance with respect to time is defined as speed. Speed is a scalar quantity. It is a time-based component. Its unit is m/sec.

Initial velocity(u)=2 m/s

V(velocity of hitting)=?

S(distance travelled)=  14 meters

The velocity of the package just before it hits the ground is found as;

From the Newton's third equation of motion;

v²=u²+2as.

v²=(-2)²+2(9.81)(14)

v=16.7 m/s

Hence,the velocity of the package just before it hits the ground is 16.7 m/s.

To learn more about the velocity, refer to the link;

brainly.com/question/862972

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Answer 2
Answer: I would assume air resistance is negligible and so the acceleration of the package would be approximately 9.81 m/s².

Taking downwards as positive, use v²=u²+2as.
v²=(-2)²+2(9.81)(14)
v=16.7 m/s

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Answers

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9. Which of the following is true regarding current in an external circuit? A. A direct current constantly switches direction of flow to match the change of charge at each terminal.
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red giant white dwarf black hole supernova a shock wave produced by extremely high temperatures a low-mass star that has shed its outer layers a star whose outer shell has a high-mass star that has collapsed from gravity expanded and cooled​

Answers

Answer:

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Answers

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The gravitational potential energy of an object Is always measured relative to the

Answers

The gravitational potential energy of an object Is always measured relative to the height of the object. It has the equation equal to mass PE = mgh where PE is the potential energy, m is the mass of the object, H is the height of the object and g is the acceleration due to gravity. 

The gravitational potential of an object is always measured relative to reference level/another point

Further explanation

Energy is the ability to do work. Energy can change from one energy to another

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John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second. If north is the positive direction, what are John and Betty's speeds?

Answers

Answer:

The John 's speed is 20 m/s.

The Betty's speed is 20 m/s

Explanation:

Given that,

John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second.

We need to calculate the John and Betty's speeds

We know that,

The speed is a scalar quantity. its has only magnitude.

Hence, The John 's speed is 20 m/s.

The Betty's speed is 20 m/s

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Direction is not involved in describing speed.