Physics: Motion and Forces

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What is the fundamental idea behind Galileo's concept of projectile motion?

Combination of uniform motion in the horizontal direction and uniformly accelerated motion in the vertical direction (correct)
Uniform motion in both horizontal and vertical directions
Uniformly accelerated motion in both horizontal and vertical directions
Combination of uniformly accelerated motion in the horizontal direction and uniform motion in the vertical direction

What is the primary reason an object in motion will continue to move in the same direction and speed?

The absence of an unbalanced force (correct)
The force of gravity acting on the object
The force of air resistance acting on the object
The force of friction acting on the object

What is the relationship between the net force acting on an object and its acceleration, according to Newton's Second Law of Motion?

The acceleration of an object is directly proportional to the net force (correct)
The acceleration of an object is directly proportional to the square of the net force
The acceleration of an object is inversely proportional to the square of the net force
The acceleration of an object is inversely proportional to the net force

What is the principle behind Newton's Third Law of Motion?

The force of action is equal to the force of reaction (C) Signup and view all the answers

What is the term for the tendency of an object to resist changes in its motion?

Inertia (A) Signup and view all the answers

What was Galileo's prediction about balls rolling along a horizontal plane?

They would neither speed up nor slow down. (A) Signup and view all the answers

According to Aristotle, what is the reason for an object coming to rest?

Lack of impetus. (C) Signup and view all the answers

What is the acceleration of a projectile in Galileo's model?

9.8 m/s² (D) Signup and view all the answers

What is the main difference between Aristotle's and Galileo's understanding of motion?

Galileo believed in inertia, while Aristotle did not. (C) Signup and view all the answers

According to Galileo, what is the effect of friction on an object's motion?

It decreases the object's speed. (B) Signup and view all the answers

What is the main characteristic of an object's natural motion, according to Aristotle?

It is dependent on the object's composition. (B) Signup and view all the answers

What is the fundamental concept of Galileo's investigation on motion?

Physics should be investigated by experiment rather than logic. (A) Signup and view all the answers

What is the acceleration of pure freefall according to Galileo's experiments?

9.8 𝑚/𝑠² (D) Signup and view all the answers

What is the natural state of motion according to Galileo's concept?

Motion (D) Signup and view all the answers

According to Galileo's concept, what is necessary for an object to start or stop moving?

Gravity and friction (D) Signup and view all the answers

What is the main difference between Aristotle's and Galileo's ideas on motion?

Aristotle believed that motion depends on the object's composition, while Galileo did not. (D) Signup and view all the answers

What is the implication of Galileo's concept that an object will keep moving in a straight line forever if there is no interference?

Objects will always maintain their initial velocity. (D) Signup and view all the answers

Physics: Motion and Forces

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