Question

A particle is thrown vertically upwards with velocity 20 m/s. Find : [Take g = 10 m / s?]
(1) the distance travelled by the particle in first 3 seconds,
(2) displacement of the particle in 3 seconds.
len around in annos
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Answer 1

Answer:

Explanation:

There are still some deficiencies in the Standard Model of physics, such as the origin of mass, the strong CP problem, neutrino mass, matter–antimatter asymmetry, and the nature of dark matter and dark energy.[1][2] Another problem lies within the mathematical framework of the Standard Model itself—the Standard Model is inconsistent with that of general relativity, to the point that one or both theories break down under certain conditions (for example within known spacetime singularities like the Big Bang and the centres of black holes beyond the event horizon).

Explanation:

Answer 2

Answer:

(1): 15m

(2):

Explanation:

(1): up direction-(+)

down direction-(-)

s=ut+1/2at^2

s=?

u=+20

t=3

a=-10

s=(20)(3)+1/2(-10)(3)^2

s=60+(-45)

s=60-45

s=15m

(2): v^2-u^2=2as

v=0

u=20

a=-10

by putting values we get

(0)^2-(20)^2=2(-10)s

0-400=-20s

-400=-20s

s=20m