PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick
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(a) 1.49 m/s
The conservation of momentum states that the total initial momentum is equal to the total final momentum:
where
m = 0.016 kg is the mass of the bullet
is the initial velocity of the bullet
M = 3 kg is the mass of the block
is the initial velocity of the block
v = ? is the final velocity of the block and the bullet
Solving the equation for v, we find
(b) Before: 627.2 J, after: 3.3 J
The initial kinetic energy is (it is just the one of the bullet, since the block is at rest):
The final kinetic energy is the kinetic energy of the bullet+block system after the collision:
(c) The Energy Principle isn't valid for an inelastic collision.
In fact, during an inelastic collision, the total momentum of the system is conserved, while the total kinetic energy is not: this means that part of the kinetic energy of the system is losted in the collision. The principle of conservation of energy, however, is still valid: in fact, the energy has not been simply lost, but it has been converted into other forms of energy (thermal energy).
The sample's density with respect to the volume it displaces is equal to: C. 0. 60 g/mL
<u>Given the following data:</u>
- Mass = 1.8 grams
- Initial volume = 20 mL
- Final volume = 23 mL
To calculate the sample's density:
First of all, we would determine the volume displaced by the sample;
Volume displaced = 3 mL
Density can be defined as mass all over the volume of an object. Thus, density is mass per unit volume of an object.
Mathematically, the density of a substance is given by the formula;
Substituting the given parameters into the formula, we have;
Density = 0.60 g/mL
Read more: brainly.com/question/18320053
