Answer:
33.33 m/s
Explanation:
m = 450 kg. T = 5000 N, t = 3 seconds,
let the net acceleration is a.
T = m a
a = 5000 / 450 = 11.11 m/s^2
u = 0 , v = ?
Let v be the velocity after 3 seconds.
Use first equation of motion
v = u + a t
v = 0 + 11.11 x 3 = 33.33 m/s
C the correct but not sure?
Answer:

Explanation:
From the question we are told that:
Speed of light 
Generally the equation for Average Speed is mathematically given by

Where
d=Distance between the Earth and the sun

Therefore



Since m and n is given in the form of

Therefore


Answer:
Object 2, which has a density of 1.9 g/cm3, since it has more density than freshwater.