Answer:
Explanation:
Height Of the watermelon when it is dropped is given as
time of fall under gravity
now if water melon start from rest then we have
acceleration due to gravity for watermelon
now we need to find the final speed of watermelon
so we will have
Answer:
A) being influenced by equal amounts of gravity and air resistance.
Explanation:
B) slowing down because of an unbalanced force of air resistance.
False - if it was slowing down, then the velocity would go down.
D) on the ground and is not falling anymore.
False - This would be mistaken as the answer but it is not because if the person is not falling anymore the horizontal line should be at the x-axis, meaning that there is no more velocity.
C) accelerating because of an unbalanced force of gravity.
False - The line would otherwise be going up or down.
Answer:
Short answer, because copper wire does not have high resistance.
Explanation:
Question
What was the change in potential energy of the sheep?
Answer:
1962(m) J
Explanation:
Potential energy is given by
PE=mgh
Change in potential energy is given by
∆PE=mg(h2-h1)
Where ∆PE is the change in potential eneegy, g is acceleration due to gravity, h2 is final height and h1 is the initial height.
Substituting 9.81 m/s² for g, 1200 m for h2 and 1000 m for h1 then
∆PE=m*9.81(1200-1000)=1962m Joules
Since we are not given the mass of rhe sheep, the answer will be 1962(m) Joules
