Using the equations of kinematics, we obtain the following results;
- Maximum height of the cannonball = 59 m
- Velocity with which the ball strikes the building = 24 m/s
- Total time of flight of the cannonball = 7 secs
<h3>What is the maximum height?</h3>
The maximum height is the height that was attained by the projectile. In this case, we have the fact that the projectile was fired vertically upwards with a speed of 34.0m/s. On the descent, the cannonball lands on top of a 30.0m tall building.
1) The maximum height could be obtained from;
v^2 = u^2 -2gh
v = final velocity ( 0 m/s at the maximum height)
u = initial velocity = 34.0m/s
g = acceleration due to gravity = 9.8 m/s^2
h = maximum height attained
Since v = 0 m/s
u^2 = 2gh
h = u^2/2g
h = (34)^2/ 2 * 9.8
h = 1156/19.6
h = 59 m
2) Given that the distance covered from the maximum height to the top of the building = 59 m - 30 m = 29 m
v^2 = u^2 + 2gh
In this case, the initial velocity is zero because the cannonballs dropped from a height
v^2 = 2gh
v = √2gh
v = √2 * 9.8 * 29
v = 24 m/s
Given that;
v = u - gt
v = 0 m/s when the cannon ball is projected upwards;
u = gt
t = u/g
t = 34.0m/s/9.8 m/s^2
t = 3.5 secs
The total time spent in air = 2(3.5 secs) = 7 secs
Learn more about kinematics:brainly.com/question/7590442
#SPJ1
Answer:
Explanation:
GIVEN DATA:
Charge 3 nC
Radius of ring is 10 cm
A point charge 1 nC
Distance of point charge is 2.5 m
We know that voltage is calculated as
V = 270 V
At x = 2.5m
r = 1.581 m
V(2) = 10.801 V
Work done is calculated as
W= q(dV)
Answer:
mass number = protons + neutrons
Natural selection, it's simply when one animal outsmarts the rest and lives on to reproduce and carry on it's traits, when the animals who have not adapted well do not have the chance to reproduce, and the population dies off.
