How can you describe the motion of different bodies?

You can describe the motion of an object by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing.

How does force affect the motion of an object?

Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. So forces cause acceleration.

Does it take more force to slow something down or speed it up?

For example if a ball is hit harder, it will speed up faster. If an object must be slowed down quickly, the force applied to the object must be greater than what is needed for a gradual slowing down. For example, the greater the force applied to the brakes of a bicycle, the more quickly it will slow down or stop.

How does force causes motion?

For an object to move, there must be a force. A force is a push or pull that causes an object to move, change direction, change speed, or stop. Some forces are greater than other forces, and the greater the force the greater the motion. We can measure how great or small a motion is by measuring the speed of an object.

What does the change in motion of an object refers to?

In physics, motion is the phenomenon in which an object changes its position. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. So, the term motion, in general, signifies a continuous change in the positions or configuration of a physical system in space.

What keeps an object in motion?

Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity. Inertia is a force which brings all objects to a rest position. A more massive object has more inertia than a less massive object.

What happens when a moving object collides with something?

Two colliding objects will exert equal forces upon each other even if their mass is significantly different. During a collision, an object always encounters an impulse and a change in momentum. During a collision, the impulse which an object experiences is equal to its velocity change.

Which forces cause changes in the motion of a system?

Unbalanced forces cause a change in motion, speed and/or direction.

How does friction affects the motion of an object?

The force of friction opposes the motion of an object, causing moving objects to lose energy and slow down. When objects move through a fluid, such as air or water, the fluid exerts a frictional force on the moving object.

Does more friction increase speed?

Whether it be through air resistance, or simple surface friction, the speed of a moving body always decreases when some frictional force acts on it.

How can the motion of an object that is already moving change?

How can a force change the motion of an object that is already moving? A force can accelerate a moving object by changing its speed, its direction, or both.

Why does an object that moves eventually come to stop?

In order for there to be continuous motion, there must always be a force acting on it. Why some people say it’s true: Any object which moves eventually comes to stop. Thus, to keep it in motion, a force must be applied. Why some people say it’s false: The object stops because of friction. Without friction, it will continue moving.

What are the forces acting on a moving body?

If a body experiences an acceleration ( or deceleration) or a change in direction of motion, it must have an outside force acting on it. Outside forces are sometimes called net forces or unbalanced forces.

What is it called when a body experiences an acceleration?

If a body experiences an acceleration ( or deceleration) or a change in direction of motion, it must have an outside force acting on it. Outside forces are sometimes called net forces or unbalanced forces. The property that a body has that resists motion if at rest, or resists speeding or slowing up, if in motion, is called inertia.

What causes some objects to move farther than others?

b) what causes some objects to move farther than others. Key vocabulary words: Force: any cause that makes on object move or stop. Mass: weight of an object. Friction: a force that happens when one object rubs against another object.