A 5kg ball is on top of the school building at a height of 40m above the ground. A. calculate the potential energy of the ball at that height.

B. How much power would it take to get the ball from the ground to that height in 1 minute.

C. If it is dropped what type of energy will the ball have as it approaches the ground.

D. What speed will the ball hit the ground

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s

the components of a vector are the parts of the vectors that are to each other.

b perpendicular