0
Forces are the only things that can change an object's speed or direction, if both you and the object are in appropriately chosen inertial reference frames.
If you or the object are in a non-inertial frame (or frames), then the object's speed and direction can change with no cause at all. It's like magic. This actually happens in everyday life, in subtle ways, owing to things like the earth's rotation and its revolution around the sun. The effects are small so you don't feel them, but if you watch for a long, long time, you can detect changes of speed and direction that are best explained by these causes that we do not easily perceive.
What else can I help you with?
What does a measure of both the speed and direction of a moving object?
A measure of both the speed and direction of a moving object is known as velocity. Velocity is a vector quantity that defines both the rate at which an object changes its position (speed) and the direction in which it is moving.
How can an object accelerate if it is moving at a constant speed?
An object can accelerate even if it is moving at a constant speed if the direction of its velocity changes. Acceleration is defined as a change in velocity, which includes changes in speed, direction, or both. For example, a car moving in a circle at a constant speed is accelerating because its direction is constantly changing.
What is the direction of velocity in a moving object?
The direction of velocity in a moving object indicates the speed and the direction in which the object is moving. Velocity is a vector quantity that includes both magnitude (speed) and direction.
Velocity is the change of speed and direction of an object?
Velocity is a vector quantity that includes both speed and direction. It describes how fast an object is moving along with the direction in which it is moving. Mathematically, velocity is calculated as the rate of change of an object's position with respect to time.
Why the speed of an object is constant while the velocity is not?
This is not always the case. But if an object moves in a circle, at constant speed, its velocity will change. Velocity is a vector - consisting of the magnitude (the speed), and a direction. So by definition, if the direction changes, the velocity changes - you have a different vector.
What does a measure of both the speed and direction of a moving object?
A measure of both the speed and direction of a moving object is known as velocity. Velocity is a vector quantity that defines both the rate at which an object changes its position (speed) and the direction in which it is moving.
How can an object accelerate if it is moving at a constant speed?
An object can accelerate even if it is moving at a constant speed if the direction of its velocity changes. Acceleration is defined as a change in velocity, which includes changes in speed, direction, or both. For example, a car moving in a circle at a constant speed is accelerating because its direction is constantly changing.
What is the direction of velocity in a moving object?
The direction of velocity in a moving object indicates the speed and the direction in which the object is moving. Velocity is a vector quantity that includes both magnitude (speed) and direction.
Velocity is the change of speed and direction of an object?
Velocity is a vector quantity that includes both speed and direction. It describes how fast an object is moving along with the direction in which it is moving. Mathematically, velocity is calculated as the rate of change of an object's position with respect to time.
What happened to the speed of moving object when it is pushed in the direction of motion?
When a moving object is pushed in the direction of its motion the speed of the object increases
What happen to the speed of moving object when it is pushed in the direction of motion?
When a moving object is pushed in the direction of its motion the speed of the object increases
Under what circumstances can an object moving with an constant speed (uniform magnitude oits velocity) have an acceleration?
When the direction changes. A simple case is an object moving in a circle, at constant speed.
Why the speed of an object is constant while the velocity is not?
This is not always the case. But if an object moves in a circle, at constant speed, its velocity will change. Velocity is a vector - consisting of the magnitude (the speed), and a direction. So by definition, if the direction changes, the velocity changes - you have a different vector.
How do you describe motion of an object?
Motion of an object is typically described by its speed, direction, and acceleration. Speed refers to how fast the object is moving, direction indicates the path it is following, and acceleration is the rate at which its speed or direction changes. These factors collectively define the motion of an object.
What happens when a moving object speeds up slows down or changes directions is it acelleration?
Yes, changes in an object's speed, direction, or both involve acceleration. Acceleration is the rate of change of an object's velocity over time, where velocity includes both speed and direction. So, any time an object speeds up, slows down, or changes direction, it is experiencing acceleration.
What kind of motion occurs when velocity and acceleration are not in the same direction?
When velocity and acceleration are not in the same direction, the object is either speeding up while moving in the opposite direction of its motion (deceleration) or slowing down while moving in the direction of its motion. This results in changes in speed and direction of the object's motion.
When is the speed zero?
The speed is zero when an object is at rest or not moving. This can occur at any point during an object's motion when it changes direction or comes to a stop.
