Answer:
due to heaviness
Explanation:
because metal is heavier than water
They have the most potential energy when they reach the tops of the pendulum, just like it has the most kinetic energy when the pendulum swings through the bottom.
Answer:
m1 = 20g (= 0.02 kg)
Mass of pistol, m2 = 2 kg
Initial velocity of the bullet (u1) and pistol (u2) = 0
Final velocity of the bullet, v1 = +150m s-1
Let v be the recoil velocity of the pistol.
Total momentum of the pistol and bullet after it is fired is
= (0.02 kg x 150 m s-1) + (2 kg x v m s-1)
= (3 + 2v) kg m s-1
Total momentum after the fire = Total momentum before the fire
3 + 2v = 0
→v = -1.5 m/s
Answer: I think the last one, I am not sure but from what I learned what it looks like.
Explanation: