Question

An object is projected with velocity of 20 m/s at 50° with the horizontal

Answer 1

Answer:

Answer

Correct option is

D

40:1

Horizontal velocity, v

x

=20cos(45

o

)=10

2

m/s

Vertical Velocity , v

y

=20sin(45

o

)=10

2

m/s

Using s=ut+

2

1

at

2

h=10

2

t−

2

1

×10×t

2

....1

⇒x=10

2

t ⇒t=

10

2

x

Put the value of t in equation 1, we get

h=x−

40

1

x

2

,

By comparing the given equation of trajectory, ⇒A=1 and B=

40

1

Hence, A:B=1:

40

1

=40:1

please folow me