When speed slows down you have kinetic energy.
We will use the formula p = mgh
p is potential energy.
m is mass of object in kg
g is acceleration due to gravity (9.8m/s²)
h is height of the objects displacement in meters.
p = mgh → mgh = p → h = p / mg
p is 14000j, m is 40kg and g is 9.8 m/s²
h = 14000 / 40 × 9.8 → h = 1400 / 392 → h = 35.7
Therefore , the cannonball was 35.7 meters high .
Should be -9.8m/s^2!!! The force of gravity is the only thing pushing it down!!
Hope I helped you out!!
Answer:
Explanation:
Given
initial horizontal speed of =6.55 m/s
height of rock=1.4 m
Horizontal distance=8 m
Time to travel 8 m


Time to cover 1.4 m



<span> Magnetic fields have north and south magnetic poles.</span>