Answer:
Decreases.
Explanation:
When an object with potential energy falls to the ground, its potential energy decreases and kinetic energy increases.
A cannon is fired with an initial horizontal velocity of 20 m/s and initial vertical velocity of 25 m/s. After 3s in the air, the canon hits it’s target. How far away(in meters) was the canon from its target? Answer:_____m
Answer:
60 m
Explanation:
After 3 seconds of travel at 20 m/s, the projectile is 3·20 = 60 meters horizontally from the cannon.
__
The vertical height after 3 seconds is 0.9 m, so the straight-line distance from cannon to target is √(60^2 +0.9^2) ≈ 60.007 meters.
An object is known to have balanced forces on it. Which of the following would be a true statement?
If an object has a balanced force on it, there is a possibility that the object may be in a position i.e. there is no change in speed and direction of the body.
If the forces acting on an object is balanced, it means that the net force acting on the body is zero.
According to Newton's law of motion, an object will continue in a state of motion in a straight line unless acted upon by an external force.
This external force might be a balanced or unbalanced force. Hence if an object has a balanced force on it, there is a possibility that the object may be in a position i.e. there is no change in speed and direction of the body.
Learn more here: https://brainly.com/question/20835245
A ball Of Mass. 0.5 kg initially at rest is kick directly toward offense from appoint 20 m away as shown below the velocity of the ball as it leaves the kickers foot is 16 M/S at angle 45 degrees above the horizontal the top of the fence is 4 m high the ball hits nothing Wallen flight and a resistance is negligible the acceleration due to gravity is 9.8 M/S^2 determine the time it takes for the ball to reach the plane of the fence.
Answer:
a. The horizontal component of the velocity is constant so vxt = d where vx = v0 cosθ = 16m/s t = d/v = 2s
b. The height of the ball during its flight is given by y = v0yt + ½ gt2 where v0y = v0sinθ = 12m/s and g = –9.8m/s2 which gives at t = 2s, y = 4.4m. The fence is 2.5m high so the ball passes above the fence by 4.4m – 2.5m = 1.9m
Explanation:
Using parallax, what is the distance to the
farthest stars you can measure?
the magnetism of a permanent magnet results from __________.
Answer:
Explanation:
The magnetism of a permanent magnet results from the magnetic moments of electrons in the material making up the magnet interactions with Earth's magnetic field the magnetic moments of nuclei in the material making up the magnet electric currents inside the magnet.
Why do we use silk threads to suspend charged rods instead of metallic threads?
Answer:When you rub the glass rod with the silk, the rod charges positive. If you place a charged rod on one of the swivel stands, and then bring another charged
Explanation: i no it
please help the picture is above !
Answer:
its C- 20
Explanation:
what is heliocentric model?
Answer:
A model of the solar system with the sun in the middle
Explanation:
Use the picture to answer the question.
Name at least three physical properties of the bowling
ball.
1
Answer:
I need the picture to amswer the question thay's why it says " "
i NEED THE RIGHT ANSWER FOR THIS ASAP NO LINKS !!!
Answer:
it is the dependent since it keeps changing over time get it :)
Explanation:
Please if someone knows the answer please help
jane pushed a box with 15 N force (an action) what force does the box have on Jane? which law is this?
Answer:
This is Newton’s third law (forces due to friction). There would be 15N being pushed back at Jane.
Explanation:
Newton’s third law states that for every action there is an equal and opposite reaction. So if Jane pushed with a force of 15N, 15N would be pushed back at her. Hope this helps! :)
True or False: the longer the hail stone is
kicked around by updrafts the larger it
gets.
こんにちは人々
False
difference between horizontal and vertical motions
Answer:
This is to say that the vertical velocity changes by 9.8 m/s each second and the horizontal velocity never changes. This is indeed consistent with the fact that there is a vertical force acting upon a projectile but no horizontal force.
Explanation:
Math the words in the box with the sentences below.
In order of appearance on the table;
Magnetic force
Normal force
Gravity
String force
Friction
Contact force
Tension
Non Contact force
Static force
Applied force
please mark BRAINLIEST if I'm right.
Question pictured below
Jeremy ran a race at a speed of 15 m/s in a time of 8 seconds. Calculate the distance he ran.
Answer:
120 m/s if m/s means miles per second than
Explanation:
15 × 8
Answer:
d = 120 m
Explanation:
Data:
Speed (s) = 15 m/sTime (t) = 8 sDistance (d) = ?Use the formula:
d = s * tReplace with the data, and solve:
d = 15 m/s * 8 sd = 120 mThe distance is 120 meters.
Greetings.
A 755 N force is used to push a 15 Kg box across the floor. What is the acceleration of the box?
Answer:
a = 151/3 m/s²
General Formulas and Concepts:
Forces
Newton's 2nd Law of Motion: F = ma
F is force (in N)m is mass (in kg)a is acceleration (in m/s²)Explanation:
Step 1: Define
Identify variables
F = 755 N
m = 15 kg
Step 2: Solve for a
Substitute in variables [Newton's 2nd Law of Motion]: 755 N = (15 kg)aIsolate a: a = 151/3 m/s²Topic: AP Physics 1 - Algebra Based
Unit: Forces
Using your knowledge of momentum explain why cars are designed to have crumple zones?
Answer: I think cars are designed to have crumble zone because lets say you're going 60-70 mph and you hit a brick wall that cant move, it would be a very hard jolt causing the beings inside to get thrown forward, but if it has a crumble zone it would slow the the jolt from is slowing down in the hit.
what phase change occurs as the substance at .75 atm is heated from 0 C to 25 C
Identify some sports or activities you can do to improve your overall health and explain how physical activity can improve your
Answer:
soccer
Explanation:
soccer can inprove your health because you use all parts of your body playing it. You use your legs because you are running and you use your arms for doing throw ins. Soccer is also good for you because you are not playing for too long. Usually one soccer game is only 1 hour.
Hope this helps
HELP PLEASE!!!! 20 POINTS
Answer:
You are correct the answer is D
Brainliest will be appreciated thank you!
What is the equation for the force of a spring
Answer:
F=-kx
Explanation:
yan lang po ang alam ko
A car, travelling at a speed of 30 m/s in a straight line, brakes and decelerates at a uniform rate of 2 m/s2. How much further does it travel before coming to rest?
Answer:
You are finding acceleration, so it would be 15 m/s2
Explanation:
30 divided by 2
If the mass of an object is 176 and Net force is 50, what would be the Acceleration?
Answer:
0.28m/s²
Explanation:
Force = mass•acceleration
F = m•a
50 = 176•a Divide both sides by 176:
50/176 = a ≈ 0.28 m/s²
Explain how the basic unit are combined to give the derived units of force, velocity, pressure and work
Velocity:
Velocity is change in displacement with respect to time:
[tex]\frac{\Delta x}{\Delta t}[/tex]
Analysing the units, meters (displacement) and seconds (time) are basic units:
[tex]\frac{m}{s}[/tex]
Therefore the unit of velocity is m/s
Force:
Newton's second law of motion:
[tex]F = ma[/tex]
Kilogram (mass) is a basic unit, and accelerations unit can be found using the equation:
[tex]a=\frac{\Delta v}{\Delta t}[/tex]
Analysing the units:
[tex]\frac{\frac{m}{s}}{s}=\frac{m}{s^2}[/tex]
Therefore, the unit of force is:
[tex]kg\frac{m}{s^2}[/tex]
Pressure:
Pressure is given by the equation:
[tex]P=\frac{F}{S}[/tex] where S is area of effect, F is force
Area for a basic rectangle (geometric shape is arbitrary for dimensional analysis) is found by multiplying two lengths:
[tex][l^2]=m^2[/tex], the unit of area
Dividing the aforementioned unit of force by the unit of area:
[tex]\frac{kg\frac{m}{s^2}}{m^2}=\frac{kg}{ms^2}[/tex], the unit of pressure
Work:
Work is given by the equation:
[tex]W=\vec{F}\cdot \vec{x}[/tex], (dot product may be assumed as normal multiplication for the purposes of unit analysis)
Knowing displacement's (x) unit is m:
[tex][W]=\frac{kgm}{s^2}m=\frac{kgm^2}{s^2}[/tex], the unit of work.
how did the discovery of eris force astronomers to reconsider the definition of planet?
Answer:
Explanation:
They had demoted Pluto on the basis of the discovery of Eris. They also discovered that Eris had a moon. It was thought to be much bigger than Pluto. That turned out not to be true. So having accepted Eris as a planet, they had to consider carefully what to do about Pluto. It has a gravitational constant of 0.82 m/s^2 which is 8.4% of that of our gravitational pull. and slightly more than Pluto.
Later data showed that these two objects in space were more like twins and that's what shook up the definition of a planet. You can't demote one and not the other.
What is electric magnetism?
Answer:
the physical phenomenon produced by moving electric charge
Explanation:
Answer:
a maget can attract if n+s=con,not n+n=con or s+s=con
why is the saturated lapse rate less than the dry adiabatic lapse rate?
Answer:
(Hope this helps can I pls have brainlist (crown)☺️)
Explanation:
Lifting a saturated package causes it to expand and cool, resulting in vapour condensation. Condensation will release latent heat, partially counteracting the cooling. As a result, a saturated parcel's adiabatic lapse rate is smaller than an unsaturated parcel's.
Because moist air ascending condenses off its water vapour, the moist adiabatic lapse rate is lower than the dry adiabatic lapse rate (once saturation is attained). The air is considered to be saturated when the dew point temperature and air temperature are identical.
is my answer correct?,
“gains electric potential energy”
if not, what’s the correct one?
pls help
sometimes you just gotta take some risks in life. go with that answer