Look Out! A snowball rolls off a barn roof that slopes downward at an angle of 40 degrees . The edge of the roof is 14.0 m above the ground, and the s

lwfrgin

lwfrgin

Answered question

2021-05-16

Look Out! A snowball rolls off a barn roof that slopes downward at an angle of 40 degrees . The edge of the roof is 14.0 m above the ground, and the snowball has a speed of 7.00 m/s as it rolls off the roof. Ignore air resistance.
A man 1.9 m tall is standing 4.0 m from the edge of the barn. Will he be hit by the snowball?

Answer & Explanation

SabadisO

SabadisO

Skilled2021-05-18Added 108 answers

47cos40=0.7459s
The snowball will be 4 meters from the barn in 0.7459 seconds.
s=ut+.5at2
=(7sin40)0.7459+.59.8(0.7459)2
= 6.083 m
In 0.7459 seconds the ball will fall 6.083 meters.
It will still be 14.0-6.083 = 7.917 meters above the ground.
It will fly over the head of the man and NOT hit him.

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