Power = (work) / (time)
= (120 J) / (2 sec)
= 60 watts .
Answer:
fossil fuels are natural and limited, nuclear is man made and more toxic
Explanation:
Initial conditions
K is the spring constant
X is the compression of the spring
Answer:
a) 30 degree
Explanation:
As we know that time of flight of the projectile depends on the the vertical component of the velocity always
It is given as
now we know that
so we will have
since we know that two projectiles are projected at same speed but different angles
so smaller the angle will take smaller time
so it would be 30 degree projectile which will take smaller time
When the ball goes upward, the velocity is decreasing. Therefore, the kinetic energy is decreased. The potential energy when the ball's height increases also increases. When the ball reaches maximum, the velocity becomes zero and the kinetic energy is minimum.