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(a) A particle is thrown vertically upwards into the air. Its heights (in m) above the ground after time t (in seconds) is given by () s-25t-5t² What height does the particle reach? What is its velocity when it falls to hit the ground? What is its acceleration?

(a) A particle is thrown vertically upwards into the air. Its heights (in m) above the ground after time t (in seconds) is given by () s-25t-5t² What height does the particle reach? What is its velocity when it falls to hit the ground? What is its acceleration?

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QUESTION 1 (a) A particle is thrown vertically upwards into the air. Its heights (in m) above the ground after time t (in seconds) is given by (1) (ii) (iii) s=25t-5t² What height does the particle reach? What is its velocity when it falls to hit the ground? What is its acceleration? (b) A particle moves along the curve y=√1+x¹ As it reaches the point (2,3), the y- coordinate is increasing at a rate of 4 cm/s. How fast is the x-coordinate of the point changing at that instant?
Transcribed Image Text:QUESTION 1 (a) A particle is thrown vertically upwards into the air. Its heights (in m) above the ground after time t (in seconds) is given by (1) (ii) (iii) s=25t-5t² What height does the particle reach? What is its velocity when it falls to hit the ground? What is its acceleration? (b) A particle moves along the curve y=√1+x¹ As it reaches the point (2,3), the y- coordinate is increasing at a rate of 4 cm/s. How fast is the x-coordinate of the point changing at that instant?
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