Question

A stone is projected with a velocity of 30,2 m/s at an
angle of 45º. The average horizontal velocity of stone
during its motion from starting point to its maximum
height is (g = 10 m/s2)​

Answer 1

Explanation:

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11th

Physics

Motion in a Plane

Projectile Motion

A stone is projected with a...

PHYSICS

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Asked on December 30, 2019 by

Chavi Sanan

A stone is projected with a velocity 20

2

m/s at an angle of 45

o

to the horizontal. The average velocity of stone during its motion from starting point to its maximum height is: (g=10 m/s

2

)

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VIDEO EXPLANATION

ANSWER

average velocity is given by

time

displacement

displacement till highest point will be (

2

R

,H) in horizontal and vertical direction respectively.

As given V=20

2

, θ=45

then H=

2g

V

2

sin

2

θ

, R=

g

V

2

sin2θ

,

time=

g

Vsinθ

H=20m,

2

R

=40m,T=2

average velocity =

2

20

2

+40

2

=10

5

m/s

so option A is correct.

Answer By gen2