Question

An object thrown vertically upwards reaches a height of 500 m. what was its initial velocity?How long will the object take to come back to the earth?Assume g = 10 m/s2.




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Answer 1

Answer:

let 'u' is the initial velocity and 'v' be the final

Explanation:

then from Newton's law,

(u^2)-(v^2)=2as

or,{(u)^2}-0=2×10×500

or,u^2=(10000)

or,u=100

now,

(u-v)/a=t

then,t=(100-0)/10

=10sec

Answer 2

Answer:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Scientific methodology includes the following: ... Evidence. Experiment and/or observation as benchmarks for testing hypotheses.

Explanation:

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