There are known as B. meteorites: asteroids are much larger.
Explanation:
work done=force ×distance
force=Mass ×accelleration
work done=50×8×0.4
=160J
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Explanation:
Density is mass divided by volume:
D = M / V
Given V = 79000 cm³ and D = 13.6 g/cm³:
13.6 g/cm³ = M / (79000 cm³)
M = 1,074,400 g
M = 1,074 kg
Round as needed.
<h2>The option ( b ) is appropriate answer </h2>
Explanation:
When a projectile is projected from height horizontally . The only force acting upon it is the downwards gravitational force of attraction due to earth .
Due to this force its vertical component of velocity , which is in the downward direction will be increased .
As there is no force horizontally , the horizontal velocity of throw will remain constant .
Thus ( b ) option is the correct option .
