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Class 6 Exam  >  Class 6 Tests  >  Test: Forces and Their Effect-2 - Class 6 MCQ

Test: Forces and Their Effect-2 - Class 6 MCQ


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10 Questions MCQ Test - Test: Forces and Their Effect-2

Test: Forces and Their Effect-2 for Class 6 2024 is part of Class 6 preparation. The Test: Forces and Their Effect-2 questions and answers have been prepared according to the Class 6 exam syllabus.The Test: Forces and Their Effect-2 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Forces and Their Effect-2 below.
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Test: Forces and Their Effect-2 - Question 1
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How does air resistance affect the speed of cars and airplanes?

Detailed Solution for Test: Forces and Their Effect-2 - Question 1
Air resistance, also known as drag, is a force that opposes the motion of objects through the air. In the context of cars and airplanes, air resistance tends to decrease their speed by exerting a force in the opposite direction of their motion. This force increases with speed, making it harder for vehicles to move faster.
Test: Forces and Their Effect-2 - Question 2
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What is the primary effect of friction on moving objects?

Detailed Solution for Test: Forces and Their Effect-2 - Question 2
Friction is a force that opposes the motion of objects in contact with each other. When objects are in motion, friction acts in the direction opposite to the motion, thus slowing down the objects. This is why friction is often considered a hindrance to motion and is a crucial factor in determining the speed and efficiency of moving objects.
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Test: Forces and Their Effect-2 - Question 3
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How is weight measured using a Newton meter?

Detailed Solution for Test: Forces and Their Effect-2 - Question 3
Weight is measured using a Newton meter by assessing the force of gravity acting on the object. A Newton meter is a tool specifically designed to measure weight in newtons (N). It quantifies the gravitational force pulling the object towards the center of the Earth. By using a Newton meter, one can determine the weight of an object in newtons, providing a direct measurement of the gravitational force acting on that particular object.
Test: Forces and Their Effect-2 - Question 4
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How is weight calculated based on an object's mass and gravitational field strength?
Detailed Solution for Test: Forces and Their Effect-2 - Question 4
Weight is calculated as the product of an object's mass and the gravitational field strength (g). The formula to calculate weight is Weight = mass × gravity. This formula illustrates the direct relationship between an object's mass and the force of gravity acting upon it. By multiplying the mass of an object by the gravitational field strength, one can determine the weight of the object in a particular gravitational environment.
Test: Forces and Their Effect-2 - Question 5
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How does weightlessness differ from the absence of gravity?
Detailed Solution for Test: Forces and Their Effect-2 - Question 5
Weightlessness, as experienced by astronauts in orbit, occurs due to the constant free fall towards the Earth, counterbalanced by the spacecraft's orbital motion. This sensation gives the illusion of zero gravity. However, the gravitational force is still present in space. The absence of gravity, as a concept, refers to a theoretical scenario where no gravitational force exists.
Test: Forces and Their Effect-2 - Question 6
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How does the gravitational force change with respect to distance and mass?
Detailed Solution for Test: Forces and Their Effect-2 - Question 6
The gravitational force between two objects decreases as the distance between them increases, following the inverse square law. Similarly, the gravitational force increases with the mass of the objects involved. This relationship indicates that gravitational force is influenced by both distance and mass, with larger distances and masses leading to weaker gravitational attraction.
Test: Forces and Their Effect-2 - Question 7
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How are forces like drag and mechanical friction capable of influencing the speed of moving objects?
Detailed Solution for Test: Forces and Their Effect-2 - Question 7
Forces like drag (air resistance) and mechanical friction can either decelerate or accelerate objects depending on their direction and magnitude. Drag opposes the motion of an object through a fluid (like air), while friction resists the motion between two surfaces in contact. Understanding these forces is crucial in various fields, including vehicle design and space travel.
Test: Forces and Their Effect-2 - Question 8
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What happens when two solid surfaces come into contact and move against each other?
Detailed Solution for Test: Forces and Their Effect-2 - Question 8
When two solid surfaces come into contact and move against each other, friction occurs. Friction is a force that opposes the relative motion of the surfaces in contact. It can cause objects to slow down and eventually come to a stop. Understanding friction is essential for various applications, including designing efficient machinery and reducing wear and tear.
Test: Forces and Their Effect-2 - Question 9
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How do parachutes affect the motion of skydivers?
Detailed Solution for Test: Forces and Their Effect-2 - Question 9
Parachutes are used by skydivers to deliberately increase air resistance, thereby slowing down their fall. The large surface area of a parachute increases the air resistance force, opposing the force of gravity, and allowing for a controlled and safe descent.
Test: Forces and Their Effect-2 - Question 10
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In what way can air resistance be manipulated to achieve desired effects on motion?
Detailed Solution for Test: Forces and Their Effect-2 - Question 10
Air resistance can be manipulated through changes in surface area to achieve desired effects on motion. This manipulation is exemplified when skydivers use parachutes with a large surface area to increase air resistance deliberately, thereby controlling their descent. By altering surface area, individuals can effectively manage air resistance to impact their motion as needed.
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