Unit 3 Topic 1 - Gravity and motion

Question 1

Recall that the horizontal and vertical components of a velocity vector are independent of each other

Answer 1

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Question 2

Define the term normal force

Answer 2

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Question 3

Describe and represent the forces acting on an object on an inclined plane through the use of free-body diagrams

Answer 3

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Question 4

Describe uniform circular motion in terms of a force acting on an object in a perpendicular direction to the velocity of the object

Answer 4

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Question 5

Define the concepts of average speed and period

Answer 5

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Question 6

Define the terms centripetal acceleration and centripetal force

Answer 6

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Question 7

Recall Newton’s Law of Universal Gravitation

Answer 7

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Question 8

Define the term gravitational fields

Answer 8

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Question 9

Recall Kepler’s laws of planetary motion

Answer 9

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Question 10

Recall that Kepler’s third law can be derived from the relationship between Newton’s Law of Universal Gravitation and uniform circular motion

Answer 10

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Question 11

Use vector analysis to resolve a vector into two perpendicular components

Answer 11

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