In order to change direction, the applied force (represented as a Vector) must change DIRECTION. A change in magnitude of the Force is not necessary.
Pulleys change the direction of a force.
How much force is needed to push a screw/nail into the wood is a function of the size of the surface area of the part of the screw/nail that you are trying to put in. This idea is described in the pressure function which says P=F/A The wood has a certain resistivity to deform but with enough Force (applied with a hammer/screwdriver) over a small enough Area (the bottom of the screw/nail) the Pressure will be enough to drive it through. your mom
The answer is force because Force is needed to change the direction of a moving mass.
Force changes either the speed or the direction of motion, or both.
when it changes its direction
No it does notIt may change direction but obviosly it cannot exert you force
Strictly you should ask whether a force can change the direction a body is moving in. The answer is yes.
If the work that they want to do is not being accomplished, they may want to change the direction of force. They may also want to change the direction of force due to space constraints.
Forces cause motion or the change in motion.
I think this question is not phrased very well. Any force can change objects velocity (speed+direction). If fact that is the definition of the force - F=ma any force, by definition itself, can change objects velocity. Maybe you meant what force can change objects direction of motion? In that case - any force that has a different direction (not the same as direction of motion) Any force can change an object's motion.
Direction