Our sun has a low absolute magnitude compared to many other stars but appears very bright to us because of its
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Answer:
please read the answer below
Explanation:
The angular momentum is given by
By taking into account the angles between the vectors r and v in each case we obtain:
a)
v=(2,0)
r=(0,1)
angle = 90°
b)
r=(0,-1)
angle = 90°
c)
r=(1,0)
angle = 0°
r and v are parallel
L = 0kgm/s
d)
r=(-1,0)
angle = 180°
r and v are parallel
L = 0kgm/s
e)
r=(1,1)
angle = 45°
f)
r=(-1,1)
angle = 45°
the same as e):
L = 5kgm/s
g)
r=(-1,-1)
angle = 135°
h)
r=(1,-1)
angle = 135°
the same as g):
L = 5kgm/s
hope this helps!!
Kinetic Energy, or K.E is equal to 1/2 times the mass of an object times the velocity squared.
Therefore K.E
which is 225
Energy is expressed in joules (J)
so the K.E of the ball is 225J
Hope this helped
Therefore K.E
which is 225
Energy is expressed in joules (J)
so the K.E of the ball is 225J
Hope this helped