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Answers
Answer:
4) If a ball travels vertically upwards with the initial velocity u, the maximum height h would be given by the formula:
v^2 = (u^2) + (2*(-g)*h)
v^2 = (u^2) - 2gh
h = (u2 - v2)/2g
where
h is distance in metres,
v is the final velocity in metres per second,
u is the initial velocity in metres per second,
g is acceleration due to gravity, 9.8m/s^2.
The acceleration due to gravity is negative in the formula because as the ball travels upwards, it decelerates, causing reduction in the speed of the ball until it hits 0m/s, the final velocity.
5) Weight of an object is directly proportional to mass as weight
weight = mass × gravitational force
8) Its value near the surface of the earth is 9.8 ms-2. Therefore, the acceleration due to gravity (g) is given by = GM/r2.
Explanation:
plz refer the images for ans 6,7,8
Answer:
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