In order to work out this question, we must know the momentum of the marbles.
Marble 1 momentum:
Momentum1 = mass * velocity
Momentum1 = 5 * 5
Momentum1 = 25g cm/s.
Marble 2 momentum:
Momentum2 = mass * velocity
Momentum2 = 5 * 0
Momentum2 = 0g cm/s
Therefore, the total momentum of the marbles is equal to 25g cm/s.
Momentum is ALWAYS conserved in a collision! Meaning, the momentum before and after the marbles hit must be equal. Since marble 1 comes to a complete rest and there is no mention of a change in mass, Marble 2’s velocity must equal 5m/s due to conservation of momentum!
:)
it prevents the current from passing through properly causing a surplus of voltage
The specific heat capacity of different substances vary for the same reason that different substances have different melting and boiling points to one another. If the bonds between atoms are stronger, it will require more energy to heat up the substance.Sep 8, 2018
Answer:
Fa = -Ff provided that the angle between Fa and Ff is zero
Explanation:
Since the net force is zero, the sum of adding all external forces onto the cart must be zero.
Assuming there is no other forces acting on the cart and Fa acting in the same plane as Fc (i.e. zero angle between acting forces),
Fa + Ff = 0
Hence
Fa = -Ff
The total kinetic energy before the collision is not equal to the total kinetic energy after the collision. A portion of the kinetic energy is converted to other forms of energy such as sound energy and thermal energy. A collision in which total system kinetic energy is not conserved is known as an inelastic collision.