Question

. Once an object starts moving along a clear path, it would keep moving at the same velocity if it were not for

Answer 1

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Once an object starts moving along a clear path, it would keep moving at the same velocity if it is not acted upon by an external, unbalanced force

By Newtons Laws of Motion,

An object continues in its state of rest or uniform linear motion unless or until acted upon by an external, unbalanced force

Internal forces cannot bring a change in its state of rest or uniform linear motion

If the force is not unbalanced ie, if the force is balanced by another force then net force = 0 and hence, it cannot change the state of rest or uniform linear motion

Answer 2

Once an object starts moving along a clear path, it would keep moving at the same velocity due to Newton's Laws of Motion.

• Once an object starts moving along a clear path, it would keep moving at the same velocity until and unless it is under the influence of any external force.
• This external force may be due to acceleration, or deacceleration of the effect of friction.
• acceleration increases the velocity of a moving object whereas deacceleration and frictional force oppose the motion thus decreasing the velocity.
• According to Newton's First Laws of Motion: An object will not change its motion unless a force acts on it.
• this implies that the object will remain in a state of its rest of motion until an external force acts upon it. Its state does not change due to its internal force.
• Even if forces action on the object is balanced its state does not change.
• The unbalanced external force can only change the state that is its velocity will change, it can either increase or decrease depending on the nature of the external force.

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