Answer:
about 343 metres per second
Given data
mass (m) = 0.2 Kg ,
velocity (v) =300 m/s ,
calculate momentum <em>(p) = m × v </em>
<em> = 0.2 × 300</em>
<em> </em><em> P = 60 Kg. m/s</em>
<em> Momentum of the bullet is 60 Kg. m/s..</em>
Answer:
(a): The bird speed after swallowing the insect is V= 4.83 m/s
(b): The impulse on the bird is I= 0.3 kg m/s
(c): The force between the bird and the insect is F= 20 N
Explanation:
ma= 0.3 kg
va= 6 m/s
mb= 0.01kg
vb= 30 m/s
(ma*va - mb*vb) / (ma+mb) = V
V= 4.83 m/s (a)
I= mb * vb
I= 0.3 kg m/s (b)
F*t= I
F= I/t
F= 20 N (c)
Answer:
The initial angular speed of the CD is equal to 14.73 rad/s.
Explanation:
Given that,
Angular displacement, 
Final angular speed, 
The acceleration of the CD,
We need to find the initial angular speed of the CD. Using third equation of kinematics to find it such that,

Put all the values,

So, the initial angular speed of the CD is equal to 14.73 rad/s.
The answer is true
Hope it helped