0
Why when a planet is orbiting the sun is it acceleration but the speed does not change?
Wiki User
∙ 13y ago
Because acceleration in physics, is the rate of change of velocity over time. In one dimension, acceleration is the rate at which something speeds up or slows down. The planets are constantly changing direction because of their orbit.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Does the speed of planetary orbits increase the closer the planet is to the sun?
Yes. Planets (and other things) orbit at a higher speed the closer they are to the object they are orbiting.
The moon revolves aroung earth at a fairly constant speed is the moon accelarating?
The Moon's speed is very constant. There are 2 kinds of acceleration: Linear and Centripital. Centripital acceleration is experienced by a body orbiting another body, like the Moon orbits the Earth, but it does not mean speeding up.
Why does an orbiting satellites speed remain constant?
The satellite will not change speedbecause the gravity of the earth is a perpendicular force which only affectsdirection and not speed. Parallel forces must beapplied in order to change speed, butperpendicular forces only change direction.
Why an object in a circular orbit at constant speed is experiencing an accelaratiopn?
An object in circular orbit at constant speed is experiencing an acceleration because the orbit is circular. That is, an object is accelerating not just when its speed is changing but also when its direction is changing. In physics, acceleration refers to a change in velocity which is composed of speed and direction. Hence both a change in speed and a change in direction are, by definition, a form of acceleration.
What two factors combine to keep the planets in their orbits?
None do. If the forces on a planet were balanced, then it would take off in a straight line at constant speed, not remain in orbit. The only force acting on a planet is the gravitational one, that attracts the planet toward the sun. Fortunately, that's the only force required to keep the planet in orbit.
How is Acceleration related to speed?
Acceleration is the rate of change of velocity (not speed). Acceleration is the rate of change of velocity over time. Velocity is defined by speed and direction. A satellite orbiting the earth at a constant speed is still accelerating because gravity is making it travel in a circle (or ellipse) and consequently its direction and therefore its velocity is constantly changing.
How is acceleration related to the change in speed?
A change in speed (and/or direction) is acceleration.
Is acceleration the fastest kind of speed?
No. An acceleration is not a speed. It is a rate of change of speed - that is, a change of speed, divided by the time it takes to change the speed.
What is the difference between constant speed and constant acceleration?
Constant speed means that speed doesn't change. Constant acceleration means that acceleration doesn't change. (If the acceleration is anything but zero, speed WILL change.)
Which Planet of solar system with fastest orbiting speed?
Mercury
How do you calculate time with speed and acceleration?
Average acceleration = Change in speed/time so Time = Change in speed/Average acceleration
The relationship of speed and acceleration?
Acceleration is the time rate of change of speed. Acceleration = speed/time.
For a car moving around a circular track at a constant speed the acceleration is?
constant speed=0 acceleration Acceleration is the change in speed. If the speed doesn't change(ie constant) the acceleration is zero.
What is the different between motion and acceleration?
Motion is about speed of location change, acceleration is about speed change.
How is increasing speed acceleration?
By definition acceleration is the change in velocity (speed).
How do you find the acceleration?
Acceleration = (change in speed) divided by (time for the change)
How is speed and acceleration related?
Acceleration is the change in velocity ("speed") over time.
