Question

multiple choice question
how does newtons second law of motion explain how a rocket blasts off from its launch pad?
o the force of the thrust downward pushes the rocket upward.
o the rocket keeps moving upward as long as there is a force acting on it.
o the heavier the rocket is, the more force is required for it to escape earths atmosphere.
o the rocket does not begin moving until a force acts on it.

Explanation:

Newton's second law is \(F = ma\) (force equals mass times acceleration). A heavier rocket (larger mass \(m\)) needs a larger force \(F\) to achieve the necessary acceleration to escape Earth's atmosphere.

• The first option is related to Newton's third law (action - reaction).
• The second option is more about the concept of motion while a force is applied but not specifically highlighting the \(F = ma\) relationship.
• The fourth option is related to Newton's first law (an object at rest stays at rest until a force acts on it).

Answer:

The heavier the rocket is, the more force is required for it to escape Earth's atmosphere.