Podcast
Questions and Answers
What did Isaac Newton identify as the force responsible for the motion of planets and the moon?
What did Isaac Newton identify as the force responsible for the motion of planets and the moon?
- Gravitational force (correct)
- Electromagnetic force
- Frictional force
- Tension force
What is needed to change the speed or direction of an object's motion?
What is needed to change the speed or direction of an object's motion?
- Momentum
- Force (correct)
- Velocity
- Energy
What causes an object to fall towards the earth when dropped from a height?
What causes an object to fall towards the earth when dropped from a height?
- Centripetal force
- Electric force
- Gravitational force (correct)
- Magnetic force
What determines the weight of a body at different places?
What determines the weight of a body at different places?
What does the moon go around?
What does the moon go around?
What type of force is responsible for the motion of objects around the Sun?
What type of force is responsible for the motion of objects around the Sun?
According to the universal law of gravitation, the force between two objects is proportional to:
According to the universal law of gravitation, the force between two objects is proportional to:
What is the force that keeps the moon moving along its circular path around the earth?
What is the force that keeps the moon moving along its circular path around the earth?
Why do we not see the earth moving towards an apple, even though the apple attracts the earth?
Why do we not see the earth moving towards an apple, even though the apple attracts the earth?
What happens to a stone in circular motion when there is no centripetal force acting on it?
What happens to a stone in circular motion when there is no centripetal force acting on it?
What causes a change in direction for a stone in circular motion?
What causes a change in direction for a stone in circular motion?
According to Newton's third law of motion, how does an apple attract the earth?
According to Newton's third law of motion, how does an apple attract the earth?
What type of force causes a stone to move along a circular path?
What type of force causes a stone to move along a circular path?
Why does the moon not fall towards the earth, despite being attracted by it?
Why does the moon not fall towards the earth, despite being attracted by it?
What provides the centripetal force needed for the moon to orbit around the earth?
What provides the centripetal force needed for the moon to orbit around the earth?
In which direction is the centripetal force acting on an object moving along a circular path?
In which direction is the centripetal force acting on an object moving along a circular path?
