Answer:
Explanation:
It is said to be in equilibrium about the fulcrum . It is the principle of moments.
Answer:
The velocity of the boat after Batman lands in it is 2.08 m/s.
Explanation:
Given that,
Mass of batman 
Mass of boat 
Initial velocity = 14.5 m/s
We need to calculate the velocity of boat
Using conservation of momentum
...(I)
Where, 
=mass of batman
=mass of boat
u=initial velocity
v = velocity of boat
Put the value in the equation
Hence, The velocity of the boat after Batman lands in it is 2.08 m/s.
A chemotroph gains its energy by eating something else
Answer:
Por lo tanto la expresión anterior se menciona que el trabajo mecánico es igual a los cambios de energía cinética del sistema mecánico. Trabajo mecánico y energía potencial. ... "Se realiza un trabajo sobre un cuerpo cuando este se desplaza o deforma por la acción de una fuerza" (definición de trabajo).
Answer:
-39.2m/s
Explanation:
Given that :
t = 4secs
g = -9.8m/s^2
v = ?
u = 0m/s ( since it was at rest )
V = u +at............. 1
Where v is the final velocity
a = -g = -9.8m/s^2 since the ball was dropped from a height which will eventually make it move against gravity
t = 4secs
Substitute the values into 1
v = 0 - 9.8×4
v = -39.2m/s
