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Assume that the moon travel at constant speed in a circular orbit around the earth is the moon's velocity is constant.explain your answer.?
Wiki User
∙ 14y ago
Speed is a scalar measure. That means that it is represented by a single number. Velocity is a vector measure. That means that it is represented by a pair of numbers (speed and direction).
Even though the Moon has approximately constant speed in its revolution around Earth, its velocity is constantly changing due to the pull of Earth's gravity.
Do a thought experiment: imagine a stone tied to a length of string. Imagine pulling the string in such a way that the stone travels around you in a circle. This shows that an orbit is established by a pulling force (a centripetal force). If the string broke, the stone would continue moving in the same direction it was already traveling, but its path would become approximately a straight line because there is no longer a centripetal force pulling it into a circular orbit.
Wiki User
∙ 14y ago
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Assume that the moon travel at constant speed in a circular orbit around the earth is the moon's velocity is constant?
yes
How can you get the speed of the earth orbit around the sun?
Let's calculate that. First of all we know that in general, the time it takes to travel a distance is equal to the length of that distance, divided by the speed at which you travel that distance. If we reverse that, we get that the speed is equal to the distance traveled over the time taken. We also know that the time it takes for the Earth to go once around the Sun is 1 year. So in order to know the speed we just have to figure out the distance traveled by the Earth when it goes once around the Sun. To do that we will assume that the orbit of the Earth is circular (which is not exactly right, it is more like an ellipse, but for our purpose it will do just fine). So the distance traveled in one year is just the circumference of the circle. (remember that the circumference of a circle is equal to 2*pi*Radius) The average distance from the Earth to the Sun is 149,597,890 km. Therefore in one year the Earth travels a distance of 2*Pi*(149,597,890)km. This means that the velocity is about: velocity=2*Pi*(149,597,890)km/1 year and if we convert that to more meaningful units (knowing there is 365 days in a year, and 24 hours per day) we get: velocity=107,300 km/h (or if you prefer 67,062 miles per hour) So the Earth moves at about 100,000 km/h around the Sun (which is 1000 times faster than the speeds we go at on a highway!)
How much gas does Jupiter get?
He farts a lot, so I assume he gets a whole bunch.
Whatwas the weight of Sputnik-1?
I shall assume you mean mass. 83.6Kg. or 184.3Lb.
Where did Neil Armstrong land the on Earth?
I assume you mean after his spaceflights, in which case the answer is the Pacific Ocean, both on his Gemini 8 flight and Apollo 11.
Assume that the moon travel at constant speed in a circular orbit around the earth is the moon's velocity is constant?
yes
Is it correct to assume a motion of constant speed?
It depends on your setting. If the net force on an object is zero than the object will move with a constant speed. It will also move with a constant speed (but not velocity!) if a force forces the object to move in a circular motion.
What can you assume if an object has a constant velocity?
The net force acting on it is zero.
Explain whether a car can move with changing velocity while maintaining constant speed?
Velocity is a quantity that has magnitude and direction. The magnitude of velocity is what we call "speed".If the velocity is constant, then its magnitude and direction are both constant.Constant magnitude means constant speed.So the answer to the question is "Yes".
Why is circular motion an example of constant acceleration?
Actually it isn't. In circular motion, even if you assume a constant speed (the simplest case), acceleration is towards the center. Therefore, the direction of the acceleration changes all the time - and therefore, the acceleration changes all the time.
What is the net force on a falling object when it reaches terminal velocity?
An object falling at terminal velocity is moving at constant speed (that's what terminal velocity means) and we will assume it is not changing direction (i.e. it is falling straight down; in reality it is more likely to be bobbing and weaving on the wind.) Constant speed and direction is another way of saying constant velocity. when an object is acted upon by a net force, it's velocity changes. So, since we know that the velocity is not changing, there is no force.
What is the net force acting on a falling object when it reaches terminal velocity?
An object falling at terminal velocity is moving at constant speed (that's what terminal velocity means) and we will assume it is not changing direction (i.e. it is falling straight down; in reality it is more likely to be bobbing and weaving on the wind.) Constant speed and direction is another way of saying constant velocity. when an object is acted upon by a net force, it's velocity changes. So, since we know that the velocity is not changing, there is no force.
When does a uniform circular occur?
I assume you mean "uniform circular motion". That means that:* An object moves in a circle, and * The speed, and therefore also the angular speed, is constant. As an example, this occurs in many machines that have rotating parts.
A rocket of initial mass m0 is shot vertically upward Assume that the motion occurs under constant gravitational acceleration g Let the initial velocity of the rocket on the surface of the earth be?
the initial velocity of the rocket is zero.
Is velocity proportional to force with respect to the law of motion?
No. I assume you mean Newton's Second Law; this law - in the form it is commonly teached in schools - states that F=ma. Assuming mass is constant, that would make force proportional to acceleration - not to velocity. Acceleration is the rate of change of velocity.
Why is KE equal to half mass velocity squared?
You can derive it from accelerating an object to a certain speed. Assume constant acceleration (and therefore constant force), and calculate how much work (force x distance) you need to get the object to a specific speed.
How do you convert rpm into meter per seond?
rpm is a large (while radian/second is a small) scale unit of circular displacement (rotation) while meter/second is that of linear displacement.according to the relationv=rw wherev = linear velocity (in m/s)w (omega) = angular velocity / circular velocity in (rpm or rad/sec)r = radius of the circle in which body is rotating.we can assume that rpm times radius becomes equal to meter per second.Badeekh Akbar
