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Yes, force is necessary to change any motion of an object. The force can, for example be gravity or friction. Without these two factors, an object would continue moving in its original velocity (speed and direction) in eternity.

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Q: Is force necessary to change the speed or direction of a body?
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Related questions

What is needed to change its speed or direction?

Force


What is an force that can cause an object to change its speed and direction.?

A basic physics answer for this is that a net force (or unbalanced force) will cause an object to accelerate, that is, cause the object to change its speed and/or direction.


A change in speed or direction?

A change in speed or direction is caused by a force and is called acceleration.


How can an object change speed or direction?

Gravitational Force


If an object is moving at a constant speed in one direction what is needed to change its speed or direction?

An unbalanced force


If you exert a force on an object in motion what will change?

If you exert a force on an object in motion you will change its velocity, velocity being a vector quantity of speed and direction.


A ..is required to change the speed and direction of a moving body?

Force. Change in speed and direction is change in velocity. Change is velocity is called acceleration a=F/m.. The amount of change is the amount of acceleration and that depends inversely on the mass and directly on the force.


How can a force effect a moving object?

It can change its speed or direction.


Gears may be combined in a system to?

change direction, change speed, and change force


Force can cause an object to change its speed and or direction?

yes, because force is a push or pull, so an example would be that wind (the force) pushed the bike faster toward a building and steered the bike around the building, which causes the bike to change direction. This is an example of velocity too. Velocity is speed in a specific direction.


Why does a change of speed produce a change in direction?

It doesn't. For example, you can go in a straight line, and speed up or slow down, without changing direction. And if there is both a change in direction and a change in speed, the change of speed wouldn't be the CAUSE for a change in direction. (On the other hand, both can be caused by a force applied to an object.)


How much force is necessary to keep an object moving in the same speed and direction?

None.