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What is propulsive force of a rocket engine called?
The propulsive force of a rocket engine is called thrust. It is the force that propels the rocket in the opposite direction to the exhaust expelled from the rocket engine.
Why does a rocket accelerate upwards?
A rocket accelerates upwards because of Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. In the case of a rocket, burning fuel creates hot gases that are expelled downward, creating a force that propels the rocket upwards. This force overcomes the force of gravity pulling the rocket downward, causing it to accelerate upwards.
What force accelerates an object?
The force that accelerates an object is called net force, which is the total sum of all forces acting on the object. This force causes a change in the object's velocity, resulting in acceleration according to Newton's second law of motion (F=ma).
List three situations where a force changes the velocity of an object?
When a pitcher throws a baseball, the force from the pitcher's hand accelerates the ball, changing its velocity. When a car applies brakes, the force of friction between the tires and the road slows down the car, changing its velocity. When a rocket launches into space, the thrust from the engines accelerates the rocket, changing its velocity.
How will momentum and velocity affect the launch of a rocket?
Momentum is the product of an object's mass and velocity, so a rocket with high momentum will have more force upon launch. Velocity is the speed at which the rocket is moving, which affects how quickly it accelerates and gains height. Both momentum and velocity are crucial for determining the rocket's trajectory and performance during launch.
