Question

Two projectiles A and B are fired simultaneously as
shown in figure. If they collide in air at point p at
time t, then what is the correct option

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Answer 1

Answer:Two projectiles `A` and `B` are fired simultaneously as shown in figure. They collide in air at point at time `t`.ThenA : `t(u_(1)cos theta_(1)-u_(2)cos theta_(2))=20`

B : t(u1sinθ1−u2sinθ2)=10

C : Both (a) and (b) are correct

D : Both (a) and (b) are wrong

Correct Answer: B

Question from Class 11 Chapter MOTION IN A PLANEAnswer Text

XA=XB

∴10+(u1cosθ1)t=30−(u2cosθ2)t

or t(u1cosθ1+u2cosθ2)=20

yA=yB

∴10+(u1sinθ1)t−12gt2

=20+(u2sinθ2)t−12gt2

∴(u1sinθ1−u2sinθ2)t=10

Explanation:

Horizontal distance traveled can be expressed as x = Vx * t , where t is the time.

Vertical distance from the ground is described by the formula y = h + Vy * t – g * t² / 2 , where g is the gravity acceleration.