Question

a body is thrown vertically
upward into air with an initial of
velocity u.
a) what will be the height?
why?​

Answer 1

Answer:

A body is thrown vertically upwards with an initial velocity u reaches the maximum height in 6s. The ratio of the distance traveled by the body in first second to seventh second is. Since the paticle reaches maximum height in 6 s, at 7th second travel, its initial velocity is zero.

Answer 2

Given:-

• Initial Velocity of the Body = u

• Final Velocity of the Body = 0m/s

• Acceleration due to gravity = -g

To Find:-

• Height of the body.

Formulae used:-

• v² - u² = 2as

Where,

S = Height

u = Initial Velocity

a = Acceleration

Now,

v² - u² = 2as

(0)² - u² = 2 × -g × s

-u² = -2g × s

s = u²/2g. or

h = u²/2g.

Hence, The height reached by body is u²/2g

EXTRA INFORMATION:-

• At highest Point the final Velocity is zero.

• When body falls freely, Initial Velocity is zero.

• We take Acceleration as negative when it is Projected vertically.

• The Value of g is 9.8m/s²

• The Value of g at the center of the earth is zero.

• The force of Gravitation at Equator is minimum and maximum at Poles.