Question

A rocket firing its engine and accelerating in outer space (no gravity, no air resistance) suddenly runs out of fuel. Which of the following statements correctly describes its motion after the burnout? Group of answer choices It immediately stops accelerating, and continues moving at the velocity it had when the burnout occured. It continues to accelerate at the same rate as before the burnout. It immediately begins slowing down and gradually approaches zero velocity. It continues to accelerate but at a gradually decreasing rate, until it reaches a constant velocity.

Answer 1

Answer:

It immediately stops accelerating, and continues moving at the velocity it had when the burnout occured.

Explanation:

Since the firing Engine of rocket will provide sufficient force to accelerate the rocket

Since the fuel of the rocket is burnt out so there is no source of energy remains in the rocket which will accelerate it to higher velocity

Also it is given that there is no air resistance or no gravity on the rocket in outer space

So immediately after the fuel is burnt the force on rocket will become zero and hence its acceleration will be zero

So correct answer will be

It immediately stops accelerating, and continues moving at the velocity it had when the burnout occured.