The ceiling of a tunnel is of 5m high. What is the maximum horizontal distance that a ball thrown with a speed of 20 m/s, can go without hitting the ceiling of the tunnel? (Take g = 10 m/s 2 )
A
30 m
B
40 m
C
m
D
m
Text Solution
Verified by ExpertsThe correct answer is:
D
= 5 m
⇒ 
= 5
⇒ sin θ = 
⇒ θ = 30º
R = 
= 
= 20 
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