From the given statements, let's select the statement that is not true.
• 1) The net force on an object is equal to the mass of the object multiplied by the acceleration.
Apply the Newton's Second Law of motion (Fnet = ma), this statement is TRUE.
• 2) The net force exerted on an object is related in a linear fashion to the acceleration of the object.
The net force and acceleration are related in a linear fashion.
Therefore, this statement is TRUE.
• 3) An object moving at constant velocity always has a net force acting on it.
If an object is moving at a constant velocity, the acceleration is zero. Hence, the net force actiing on the object will also be zero. This means there is no net force acting on it.
Therefore, this statement is NOT true.
• 4) An object moving with constant acceleration always has a net force acting on it.
If an object is moving with a constant accelartion, there is alwyas a net force acting on it. The accelaration is directly proportional to the net force.
Therefore, this statement is TRUE.
Therefore, the statement that is NOT true is:
3) An object moving at constant velocity always has a net force acting on it.
ANSWER:
3) An object moving at constant velocity always has a net force acting on it.