Question

Calculate maximum height and range if a body of mass 20 kg is projected horizontally with an angle 30 degree, initial velocity of projection is 20 m/s.​

Answer 1

Answer:

Maximum height = 20m and range = 10√3

Explanation:

given:- mass of body = 20kg

projected horizantal angle = 30°

intial velocity of projection = 20m/s

★ As we know that ,

Maximum height (H) = u²sin²¢/2g

u²sin²¢/2g Range' R' = u²sin2¢/g

• ∴ H = (20)² sin (30°) /2*10
• H = 400sin30°/20
• H = 20 ×sin30°
• H = 20× 1/2 = 10m

• ∴ R = (20)²sin2* (30°)/g
• = 400 sin60° / 10
• = 40 sin60°
• = 40× √3/2 = 20√3m

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Answer 2

Answer:

40× √3/2=20√3m....

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