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4 cards from this section. Quick, good the night before a test.
Define inertia.
Think about what happens when you try to push something heavy.
What happens to an object in motion when no forces act on it?
Consider what would happen if you kicked a ball in space.
According to Newton’s First Law, an object at rest will stay at rest unless acted upon by a force.
Think about how hard it is to push a stationary object.
What does inertia depend on?
Remember the difference in effort needed to push a toy versus a boulder.
A 10 kg rock sits on the ground. If someone applies a force of 50 N to push it, will it move? Explain why.
Consider how heavy the object is and the force needed to move it.
Two identical cars are traveling at the same speed. Car A suddenly stops, and Car B continues moving. Analyze the motion of both cars and explain what happens.
What causes the changes in motion for both cars?
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