Your medieval history class is constructing a trebuchet, a catapultlike weapon for hurling stones at enemy castles. the plan is to launch stones off a 71- m -high cliff, with initial speed 39 m/s . some members of the class think a 45 ∘ launch angle will give the maximum range, but others claim the cliff height makes a difference. what do you give for the angle that will maximize the range?
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Physics, 21.06.2019 18:10
Keneila is attempting to ski down a 20 m high friction free hill for the first time. she has a speed 10 m/s at the top. what is her kinetic energy when she is a the bottom, 20 m ? (a)2500 j (b)9800 j (c)12300 j (d)3100j (e)15000j
Answers: 2
Physics, 21.06.2019 19:30
The 20@kg wheel has a radius of gyration about its center g of kg = 300 mm. when it is subjected to a couple moment of m = 50 n # m, it rolls without slipping. determine the angular velocity of the wheel after its mass center g has traveled through a distance of sg = 20 m, starting from rest.
Answers: 3
Your medieval history class is constructing a trebuchet, a catapultlike weapon for hurling stones at...
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