Gravitational Effects on Earth and Space Bodies
Physics ⇒ Earth and Space Physics
Gravitational Effects on Earth and Space Bodies starts at 8 and continues till grade 12.
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See sample questions for grade 11
A 2 kg object is dropped from a height of 10 m on Earth. Ignoring air resistance, what is its speed just before hitting the ground? (Use g = 9.8 m/s²)
A 5 kg object is taken from Earth to Mars, where gravity is about 3.7 m/s². What is its weight on Mars?
A planet has twice the mass of Earth but the same radius. How does the acceleration due to gravity on its surface compare to Earth's?
A satellite orbits Earth at a constant speed. What force keeps it in orbit?
Calculate the gravitational force between two 10 kg masses separated by 2 meters. (Use G = 6.67 × 10⁻¹¹ N·m²/kg²)
Calculate the weight of a 60 kg astronaut on the Moon, where gravity is 1.6 m/s².
Describe how gravity affects the shape of planets and stars.
Describe the effect of gravity on the motion of comets in the solar system.
Explain why gravitational force is considered a non-contact force.
Explain why objects of different masses fall at the same rate in a vacuum near Earth's surface.
Explain why the acceleration due to gravity is less on the Moon than on Earth.
If the distance between two planets is tripled, by what factor does the gravitational force between them change?
If the mass of one object is doubled, how does the gravitational force between two objects change, assuming distance remains constant?
State Newton's Law of Universal Gravitation.
