Answer:
v_f = 10.85 m/s
Explanation:
We will apply the law of conservation of momentum here:
where,
m₁ = mass of roller skater = 47 kg
m₂ = mass of bag = 6 kg
v_1i = initial speed of roller skater = 12 m/s
v_2i = initial speed of the bag = 0 m/s
v_1f = final speed of the roller skater = ?
v_2f = final speed of the bag = ?
Both the bag and the skater will have same speed at the end because kater is carrying the bag:
v_1f = v_2f = v_f
Therefore, the equation will become:
<u>v_f = 10.85 m/s</u>
Answer:
Induced
Permanent
Transient
Explanation:
Induced: occurs when a molecule that has a permanent dipole repels another one's molecule's electrons, inducing the one that has a dipole moment in that molecule.
Permanent: occurs when two atoms in a molecule possess a substantially different electronegativity. i.e one atom attracts electrons more than another atom and males it more negative, while the other atom turns more positive.
Transient dipole: induces a dipole in the neighbouring molecule, and then interacts with the original transient dipole.
Answer:Rolling friction is friction that acts on objects when they are rolling over a surface. Rolling friction is much weaker than sliding friction or static friction. This explains why most forms of ground transportation use wheels, including bicycles, cars, 4-wheelers, roller skates, scooters, and skateboards.
Explanation:
After the crash the momentum before the crash is equal to the momentum after the crash