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WorksheetsUnderstanding Gravity and Energy Concepts
Total questions: 11
Worksheet time: 6mins
According to Newton's law of gravitation, which of the following options will result in a decrease in the gravitational force between two objects?
Decrease the distance between them.
Increase the mass of one object.
Move the objects away from each other.
Double the mass of both objects.
A satellite orbiting the Earth at a certain altitude experiences a gravitational force F . If the satellite moves to double the distance from the center of the Earth, what will be the gravitational force?
2F
4F
2F
4F
A 2 kg block slides down a frictionless ramp and gains 100 J of kinetic energy. How much gravitational potential energy did the block lose?
50 J
100 J
200 J
0 J
An object with 200 J of kinetic energy stops due to friction. How much energy is transferred to the environment as heat?
100 J
150 J
200 J
0 J
An object of 10 kg moving at 3 m/s stops after sliding on a surface. If the work done by friction to stop the object is Work = ΔKE , what was the initial kinetic energy?
90 J
45 J
150 J
45 J
Which of the following options best explains the energy transformation that occurs when a car engine heats up while driving?
Gravitational potential energy is converted into chemical energy.
Kinetic energy is converted into thermal energy due to friction and fuel combustion.
Elastic potential energy is converted into chemical energy.
Thermal energy is converted into kinetic energy.
A charged balloon is placed near a wall. It remains attracted to the wall without moving. What type of energy is this an example of?
Kinetic energy
Elastic potential energy
Electric potential energy
Thermal energy
What is the main reason for the change in speed of a planet as it orbits the Sun, according to Kepler's Second Law?
The distance between the planet and the Sun changes.
The gravitational attraction of the Sun is constant.
The mass of the planet changes.
The Sun moves in a circular path.
A moon orbits a planet. If the mass of the planet were to increase significantly while the distance between them remained unchanged, what would happen to the gravitational force acting on the moon?
It would decrease.
It would remain constant.
It would become zero.
It would increase.
A comet orbits the Sun in a highly elliptical path. As the comet approaches the perihelion (the closest point to the Sun), what can be said about its speed?
Its speed increases.
Its speed decreases.
Its speed remains constant.
Its speed becomes zero.
How is gravitational force calculated when it is far from the surface of the Earth?
Using the formula ma
Using the formula mg
Using Newton's law of gravitation
Using the formula mv
