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sammy [17]
2 years ago
15

The magnitude of the vertical velocity vector for an upwardly launched projectile _________. a stays constant b gets smaller and

then larger c decreases throughout the flight d increases throughout the flight
Physics
2 answers:
chubhunter [2.5K]2 years ago
7 0
B. Gets smaller and then larger
Masja [62]2 years ago
4 0

Answer:

changes by 9.8 m/s each second.

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How does Newtons first law of motion relate to planetary motion
Varvara68 [4.7K]
Newton's Laws<span>. </span>Kepler's Laws<span> are wonderful as a description of the </span>motions<span> of the </span>planets<span>. However, they provide no explanation of why the </span>planets<span> move in this way. Moreover, </span>Kepler's<span> Third </span>Law<span> only works for </span>planets<span> around the Sun and does not apply to the Moon's orbit around the Earth or the moons of Jupiter.

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3 0
3 years ago
Why is it important to know the direction of the force applied to a moving object and the direction in which the object is movin
erastova [34]

Answer

(C).

When there is an angle between the two directions, the cosine of the angle must be considered.


Step by step Solution

The work done by a force is defined as the product of the force and the distance traveled in the direction of motion.

The first answer "Only the component of the force perpendicular to the motion is used to calculate the work" is wrong because, the force perpendicular to motion does no work.

The second choice "If the force acts in the same direction as the motion, then no work is done" is wrong because the work in the direction of the force is W=F\times d.

Fourth answer "A force at a right angle to the motion requires the use of the sine of the angle" is wrong because the sin(90)=0 meaning that there is no work done in the direction perpendicular to the motion.

The third answer" When there is an angle between the two directions, the cosine of the angle must be considered." is correct because the work is calculated using the force in the direction of the motion. The magnitude of this force is F\times d\times \cos(\theta).




4 0
3 years ago
Read 2 more answers
What name is given to the process that occurs when light passes from air to water?
-Dominant- [34]

Answer:

Refraction

Explanation:

5 0
3 years ago
starting from a stop a traffic signal, a car speeds up to 20 m/s in 5 seconds. calculate the acceleration of the car.
Ira Lisetskai [31]

Answer:

5.867 m/s^2

Explanation:

Initial Speed > 0 m/s

Final Speed > 20 m/s

Time > 5 sec.

8 0
3 years ago
Three 7 0hm resistors are connected in series across a 10 V battery. What is the equivalent resistance of the circuit?
Tomtit [17]

Given

Three 7 ohm resistor are in series.

The battery is V=10V

To find

The equivalent resistance

Explanation

When the resistance are in series then the resistance are added to find its equivalent.

Thus the equivalent resistance is:

R=7+7+7=21\Omega

Conclusion

The equivalent resistance is 21 ohm

4 0
11 months ago
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