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How does the unbalaced force of gravity affect the horizontal and vertical velocities of an object in projectile motion?
Unbalanced force of gravity will not have any effect on horizontal component but makes a variation in the vertical component
How do we know if work is done?
In physics, work is done by a force acting on an object if the object moves in the direction of the force.
What will happen to an object if the frictional force opposing its motion is greater than the force pushing or pulling it forward?
The object accelerates in the direction of the resultant force.
If I were to throw an object how would I go about measuring the force I exerted on this object?
If you know the angle of the throw, and the Point where the object left your hand, you'd be able to calculate the force from how far the object Went.
Do you need to know the mass of an object to calculate force?
It depends on what else you know. If you know the mass and can measure the acceleration, you can use that to calculate force, but there are other ways to calculate force.
Will an unalanced force acting on an object change the object motion?
Yes,unbalaced force may stop or change the direction of motion or accelarate the object.
Is it true that if at any time the forces are unbalanced an object will remain at rest?
No it is not. Newton's first law states that an object at rest stays at rest (or in a constant straight line motion) unless acted upon by an outside unbalaced force. So the object would move if an unbalaced force acted on it.
How does the unbalaced force of gravity affect the horizontal and vertical velocities of an object in projectile motion?
Unbalanced force of gravity will not have any effect on horizontal component but makes a variation in the vertical component
How do unbalanced forces affect straight line?
Depends on how they are angled. An unbalaced force aligned with the straight line will either cause the object to speed up, or to slow down. An unbalance force at any other angle will cause the object to deviate from the line. Unbalanced forces will result in a net force (not zero, or it would be called balanced forces).
What is unbalaced?
An unbalance force is one that is not opposed by an equal and opposite force operating directly against the force intended to cause a change in the object's state of motion or rest. Consider this little illustration: Object, O is at rest and subjected to a force from the left as shown: Let ====> represent the force to change the object's state of motion or rest on object. O This unopposed (unbalanced) force will cause the object to move to the right. ====> O Let O <==> O <========, the larger force coming from the right is unbalance by the one from the left. Thus, the object will move toward the left. The picture is more complicated that I can illustrate here because an opposing force my be impinging on the object from an angle. Overall, it is the "net" unbalanced force that will cause the object to move or change its state of motion.
If an object falls of a shelf how do you know a force as acted on it?
You know a force has acted on the object because the objects velocity has changed as the result of a force, f= mdv/dt.
How do we know if work is done?
In physics, work is done by a force acting on an object if the object moves in the direction of the force.
Why is it useful to know net force?
you can the effect of the net force in the object motion
What will happen to an object if the frictional force opposing its motion is greater than the force pushing or pulling it forward?
The object accelerates in the direction of the resultant force.
If I were to throw an object how would I go about measuring the force I exerted on this object?
If you know the angle of the throw, and the Point where the object left your hand, you'd be able to calculate the force from how far the object Went.
When there are several people acting on an object and it starts to roll what do you know about the forces acting on the rock?
You know that the combined force is enough to overcome the force of friction.
Do you need to know the mass of an object to calculate force?
It depends on what else you know. If you know the mass and can measure the acceleration, you can use that to calculate force, but there are other ways to calculate force.
