Kinamatics

JEE Mains Guidance › Mechanics questions › Kinamatics

Two projectile are fired frm surface at a angle of 30 degree and 60 degree respectively with the horizontal...path of the first as seen by the other is
a) parabola
b)ellipse
c)st line
d)none

#Physics #Mechanics

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8 Answers

1

rahulsidhu ·2011-12-02 09:39:51

Since the parabolic term will cancel out in the relative co-ordinates

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71

Vivek @ Born this Way ·2011-12-02 22:42:36

Both have same range, So at any instant of time they'll be along the same vertical line joining them. Hence the answer, as I think should be c

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11

CARLOS ESPIRIDIÃ“N ·2011-12-03 07:19:38

I think u r r8...
@Vivek...but no where it is written they both hav same range

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36

rahul ·2011-12-03 10:23:27

coz 30 + 60 = 90

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1

buddyboyyash ·2011-12-03 17:37:18

@CARLOS

projectiles fired at complimentary angles with same initial velocity will always have same range

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CARLOS ESPIRIDIÃ“N ·2011-12-03 20:07:03

Ooo...yes r8 r8....

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1

funkygp ·2011-12-04 04:32:10

maybe stline..........

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1

Athenes Analyst ·2011-12-04 10:19:49

straight line!

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Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω