1500m race runner starts the race with a velocity X and after 10s she covered a distance of 120m. She then triple her velocity for the next 5s. She again reduced her velocity to Y which took her 3s to complete the race. calculate :i)the value of X and Y
ii)The average velocity and total time

measuring things 1 litre of water

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

c) power lifting, will be your answer.

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