The weight is the force experienced, whereas the mass represents the actual quantity of matter inside a body..
weigh on the surface of the earth is equal to mg
mass is m
and at the centre weight is 0 due to 0 acceleration that's 0 g
but mass is always constant and remains m, no matter where you are
Answer:
-22.5 m/s
Explanation:
= Mass of squid = 1.5 kg
= Mass of water ejected = 0.14 kg
= Velocity of squid = 0.4 m/s
= Velocity of squid after ejection = 2.5 m/s
v = Velocity of water ejection
In this system the momentum is conserved
The velocity of the water ejection relative to the squid is
-20+(-2.5) = -22.5 m/s
The negative sign indicates the opposite direction to the direction of the squid.
5,000 cause F=m•a I hope this helps
Answer:
F_A = 8 F_B
Explanation:
The force exerted by the planet on each moon is given by the law of universal gravitation
F =
where M is the mass of the planet, m the mass of the moon and r the distance between its centers
let's apply this equation to our case
Moon A
the distance between the planet and the moon A is r and the mass of the moon is 2m
F_A = G \frac{2m M}{r^{2} }
Moon B
F_B = G \frac{m M}{(2r)^{2} }
F_B = G \frac{m M}{4 r^{2} }
the relationship between these forces is
F_B / F_A = = 1/8
F_A = 8 F_B