Mathematics, 21.09.2021 05:50 krandall232
1. A small stone is projected vertically upwards with speed 20 m s-1 from a point O which is 5 m above horizontal ground. The stone is modelled as a particle moving freely under gravity. Find (a) the speed of the stone at the instant when it is 2 m above the ground, (b) the total time between the instant when the stone is projected from O and the instant when it first strikes the ground.
Answers: 3
Mathematics, 21.06.2019 19:30
If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b
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Mathematics, 21.06.2019 20:30
You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box
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1. A small stone is projected vertically upwards with speed 20 m s-1 from a point O which is 5 m abo...
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