Physics, 21.05.2021 22:20 sirdre1982
a 0.05kg ball falls a distance 20m after being dropped, calculate the work done in falling (show all working)
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What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds
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What was the first instrument to ever record an earthquake?
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Physics, 22.06.2019 16:40
Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
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Physics, 22.06.2019 18:00
Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7
Answers: 1
a 0.05kg ball falls a distance 20m after being dropped, calculate the work done in falling (show all...
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