Question

three athletes A B and C participating in a long jump payment jump making angle 30 degree 45 degree and 60 degree with the ground with equal velocities who will be the winner​

Answer 1

Answer:

B

Explanation:

refer the pic

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Answer 2

Athlete B will be the winner.

• The given case is of projectile motion. In a projectile motion, the object has a constant horizontal velocity and a deaccelerating vertical velocity with constant acceleration.
• The range of the projectile is the horizontal distance covered by the object.
• Range = 2u² sin ∅ cos ∅ / g

(Here u = initial velocity, ∅ = angle of projection and g = acceleration due to gravity)

• For range to be maximum, sin ∅ cos ∅ should be maximum.
• The maximum value is when ∅ = 45°, sin 45°. cos45°

        =1/√2 X 1/√2

        = 1/2

• So athlete B covers the longest distance.