Sand
dead creatures
polluted coral reefs will die
REMEMBER...CORAL ARE LIVING
Try this option (shortly):
According to the 'law of consevation of pulse' the passenger in the smaller car receives greater energy then the one in the larger car.
Almost all the received energy is spent to injure the passenger in the smaller car. :(
Answer:
The arrow was moving at 16.2 m/s
Explanation:
The law of conservation of energy says that the kinetic energy of the arrow must be converted into the potential energy of the block and arrow after it they join:
where is the mass of the arrow, is the mass of the block, of the change in height of the block after the collision, and is the velocity of the arrow before it hit the block.
Solving for the velocity v, we get:
The arrow was moving at 16.2 m/s
Kinetic energy = 1/2 * mass * velocity^2
KE = 1/2*m*v^2
Given m = 12.8 kg, v = 8.4 m/s;
KE = 1/2(12.8)(8.4)^2
KE = 451.58 J
KE = 452 J