Answer:
The total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
B: heat is transferred as thermal energy by the interaction of moving particles
Answer:
2250N
Explanation:
W= mg,
where W= weight
m= mass
g= acceleration due to gravity
Given that the body is 90kg, m= 90kg.
Acceleration due to gravity of planet
= 2.5(10)
= 25 m/s²
Weight of body on planet
= 90(25)
= 2250N
*Mass is the amount of matter an object has and is constant (same on earth and the planet).
Answer: A
Explanation:
Isotopes of different elements differ by the number of neutrons inside the nucleus.
