Scientists launch a rocket, and they monitor its acceleration and the force exerted by its engines. as the rocket gets higher, the monitors show that the acceleration of the rocket is increasing but the force exerted stays the same. how do newton’s laws explain why the scientists could expect this to happen

a) the total force stays the same, but the action force is increasing as the reaction decreases.
b) the mass of the rocket decreases as fuel is burned, so the acceleration increases.
c) the inertia of the rocket increases, which reduces the force needed to change its speed.

B) The mass of the rocket decreases as fuel is burned, so the acceleration increases.

Explanation:

Now as the rocket starts accelerating from rest its mass is the mass of the rocket and the fuel. As the rocket is accelerating it consumes fuel. As the time passes the fuel level decreases reducing the mass. However the force remains constant so, the acceleration has to increase.

Hence, the acceleration increases due to the fact that the mass of the rocket decreases as the fuel is consumed.

B.

Explanation:

Newtons laws helps us understand the kinetics involved in rocket launch. Newtons second law states that the rate of change of momentum is directly proportional to the applied force stated mathematically as;

the force applied on the rocket stays same but the acceleration increases.As the rocket moves up. its mass is burned as fuel which means a reduction in its mass. Hence becomes larger as m reduces.

Also newtons third law states that in every action there is equal and opposite reaction. which means action force must balance reaction force. the action force of the fuel which is downward must be equal to the reaction force of the rocket projecting upward. force equals ma. if the mass of the rocket reduces during flight, the acceleration must increase to balance the reaction force just to make sure its same with the action force hence obeying newtons third law.

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