A rocket weighs 2.0 x 107 N. Its engines exert 2.5 x 107 N of force at lift-off. What isthe net force applied to the rocket?
Question
A rocket weighs 2.0 x 10<sup>7</sup> N. Its engines exert 2.5 x 10<sup>7</sup> N of force at lift-off. What is the net force applied to the rocket?
Solution
The net force on an object is calculated by subtracting the force of gravity from the total force applied to the object.
Step 1: Identify the forces acting on the rocket.
- The force of gravity is 2.0 x 10^7 N (the weight of the rocket).
- The force exerted by the engines is 2.5 x 10^7 N.
Step 2: Subtract the force of gravity from the force exerted by the engines.
- Net force = Force exerted by the engines - Force of gravity
- Net force = 2.5 x 10^7 N - 2.0 x 10^7 N
Step 3: Calculate the result.
- Net force = 0.5 x 10^7 N
So, the net force applied to the rocket at lift-off is 0.5 x 10^7 N.
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