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Questions and Answers
According to Newton's second law, what happens to the motion of a body moving with uniform speed when acted upon by an external force?
According to Newton's second law, what happens to the motion of a body moving with uniform speed when acted upon by an external force?
- The motion increases
- The motion decreases
- The motion remains unchanged
- The motion changes direction (correct)
What does inertia tend to do to an aircraft when it is flying at uniform speed in a straight line?
What does inertia tend to do to an aircraft when it is flying at uniform speed in a straight line?
- Inertia tends to slow down the aircraft
- Inertia tends to keep the aircraft moving (correct)
- Inertia tends to change the direction of the aircraft
- Inertia tends to speed up the aircraft
What does Newton's second law state about the change of motion of a body when acted upon by an external force?
What does Newton's second law state about the change of motion of a body when acted upon by an external force?
- The change of motion is inversely proportional to the amount of force
- The change of motion is unrelated to the amount of force
- The change of motion is not affected by the amount of force
- The change of motion is directly proportional to the amount of force (correct)
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