Question

Page
3. Aball of mass googfall from a height of sm
cwhat is the K.E. Chen it just reaches the
ground, Cg = 90/1²)​

Answer 1

Answer:

hello all!!

given -

mass of ball- 200g =.2 kg

height (h)= 5 m

acceleration due to gravity (g) = 9.8m/s

initial velocity (u) = 0 m/s

Kinetic energy = 1/2 mv2. - (q)

so, final velocity = ?

according to V2 - U2 = 2gh

V2 - 0 = 2× 9.8×5

V2 = 98 m/s.

putting the value of V2 in (q)

Kinetic energy = 1/2 × .2×98

Kinetic energy = 9.8 joules (j) . thanks