Explain what is meant by saying that the trajectory of a projectile is symmetrical.
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Question No. 2
When is the path of a projectile not a parabola?
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Question No. 3
Answer this question without doing any calculations. A ball is thrown vertically upward with an initial velocity of 20 m/s. Roughly how high will it go? Roughly how long, from the time of leaving the thrower’s hand, will it take to return to the ground? Explain your answer.
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Question No. 4
What important contribution did Galileo make to the study of projectiles?
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Question No. 5
What is the study of projectiles called?
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Question No. 6
What does ‘escape speed’ mean? Give a value for our own planet.
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Question No. 7
Have you read Jules Verne’s book From the Earth to the Moon? Answer yes or no.
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Question No. 8
At what angle would it be best to kick a football, from horizontal ground, to achieve the greatest range?
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Question No. 9
Why do you think Question 7, above, is significant in the context of projectiles?
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Question No. 10
A man kicks a football off the deck of a ship, 3 m above the surface of the water. At what angle should the ball leave the deck if it is to travel the greatest possible distance before hitting the water?
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