Questions and Answers
Match the following terms with their definitions:
Weight = Force exerted on an object due to gravity Acceleration due to gravity = Rate of change of velocity as an object falls g = Value representing acceleration due to gravity on Earth Free fall = Motion of an object falling under the influence of gravity
Match the factors affecting acceleration due to gravity with their effects:
Distance from the center of the planet = Decreases acceleration due to gravity Mass of the planet = Increases acceleration due to gravity Shape of the planet = Greater acceleration near the poles Altitude = Decreases acceleration due to gravity
Match the following values with their descriptions:
9.8 ms-2 = Acceleration due to gravity on Earth 10 ms-2 = Approximate value of acceleration due to gravity 0 ms-2 = Acceleration in the absence of gravity Height = Influences velocity upon falling objects
Match the following scenarios with their outcomes:
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Match the following symbols with their meanings:
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Match the following objects with their gravitational influences:
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Match the following consequences with the correct cause:
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Match the following descriptions with the correct terms:
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Match the following statements with their correctness:
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Study Notes
Gravity and Weight
- Gravity is a force that attracts objects towards the Earth's center.
- The weight of an object is the force acting on it due to gravity, varying by location.
- Gravity is stronger closer to the Earth's center and weaker at greater distances.
Acceleration Due to Gravity
- The acceleration experienced by an object in free fall is known as acceleration due to gravity, denoted by 'g.'
- The value of 'g' on Earth is approximately 9.8 m/s², often rounded to 10 m/s².
- Every second of free fall, an object's velocity increases by 9.8 m/s due to gravity.
- Objects falling from greater heights reach higher velocities than those from lower heights.
Factors Affecting Acceleration Due to Gravity
- Distance from Earth's Center: Acceleration decreases as the distance from the center increases.
- Mass of the Planet: Greater mass leads to increased gravitational acceleration.
- Shape of the Planet: Gravity is stronger at the poles than at the equator, due to the Earth's oblate shape.
- Altitude: Acceleration decreases with increasing altitude.
Weight Calculation
- Weight is calculated with the formula: W = m x g, where 'W' is weight, 'm' is mass, and 'g' is acceleration due to gravity.
- As 'g' varies with location, an object's weight also changes based on its location.
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Description
This quiz covers the fundamental concept of gravity and its effects on weight and acceleration. Explore how the force of gravity varies with location and learn about the standard value of gravitational acceleration on Earth. Test your understanding of how gravity influences objects in motion.