1. Little Johnny is hiding in his tree house that is 10.0 meters above the ground. He is waiting in ambush for his
brother, Tommy. Tommy, not knowing of his brother's location or devious plans, is napping below the tree
house.
a) If Johnny drops the balloon from rest, how long does it take to hit Tommy?
b) How fast is the balloon going when it hits Tommy?
c) If Johnny throws the balloon downwards at 2 m/s, how long does it take to hit Tommy?
d) Now, how fast is the balloon going when it hits Tommy?
Answers: 3
Physics, 22.06.2019 00:50
While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.
Answers: 3
Physics, 22.06.2019 12:10
Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?
Answers: 2
Physics, 22.06.2019 17:30
Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in
Answers: 3
1. Little Johnny is hiding in his tree house that is 10.0 meters above the ground. He is waiting in...
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