Physics Quiz: Distance, Force And Displacement

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Questions: 8 | Attempts: 1,861

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• 1.

How is speed calculated?

• A.

Speed= distance ÷ time

• B.

Speed= area

• C.

Speed= distance × time

A. Speed= distance ÷ time
Explanation
Speed is calculated by dividing the distance traveled by the time taken. This formula is derived from the basic concept that speed is the rate at which an object covers a certain distance in a specific amount of time. By dividing the distance by the time, we can determine how fast an object is moving.

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• 2.

C.
• 3.

Velocity calculated by

• A.

Displacement ÷ time

• B.

Distance +Time

• C.

Time ÷ Displacement

A. Displacement ÷ time
Explanation
The correct answer is "Displacement ÷ time" because velocity is defined as the rate at which an object changes its position. Displacement refers to the change in position of an object, and time refers to the duration over which this change occurs. Therefore, dividing the displacement by the time taken gives the average velocity of the object.

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• 4.

Which of these are forces?

• A.

Displacement

• B.

Wind

• C.

Upthrust

• D.

Slide

C. Upthrust
Explanation
Upthrust is a force that acts in the opposite direction to the force of gravity. It is the force exerted by a fluid, such as water or air, on an object that is partially or completely submerged in it. Upthrust is responsible for the buoyancy of objects and is a force that can cause objects to float. Displacement, wind, and slide are not forces but rather describe different phenomena or actions. Therefore, the correct answer is Upthrust.

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• 5.

Weight is a force

• A.

True

• B.

False

A. True
Explanation
Weight is a force because it is the gravitational force exerted on an object due to its mass. The weight of an object is directly proportional to its mass and the acceleration due to gravity. This force is what causes objects to fall towards the Earth and gives them their weight. Therefore, weight can be considered as a force acting on an object.

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• 6.

Mass is measured in what unit?

Kg
Kilograms
g
grams
Explanation
Mass is a measure of the amount of matter in an object. It is commonly measured in kilograms (Kg) or grams (g). Both units are acceptable and widely used in scientific and everyday contexts. Kilograms are the larger unit, commonly used for larger objects or quantities, while grams are the smaller unit, commonly used for smaller objects or quantities. Therefore, both Kg and grams are correct units for measuring mass.

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• 7.

A Moment= force × -------- from the ---- (enter the two missing words separated by a comma)

distance, pivot
Distance, Pivot
distance, Pivot
Distance, pivot
Explanation
The correct answer is "Distance, pivot". A moment is equal to the force applied multiplied by the distance from the pivot point. The distance refers to the perpendicular distance between the pivot point and the line of action of the force. The pivot point is the fixed point around which the object rotates or turns.

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• 8.

When Forces are not balanced, the object is not moving.

• A.

True

• B.

False

B. False
Explanation
When forces are not balanced, the object may still be moving. This is because an unbalanced force can cause an object to accelerate or decelerate, resulting in a change in its velocity. Therefore, the statement that "the object is not moving" when forces are not balanced is incorrect.

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