Physics, 30.04.2021 02:00, NetherisIsTheQueen
A 0.140 kg baseball is thrown with a velocity of 28. m/s It is struck with an average force of 5000.0 N, which results in a velocity of 37.0 m/s in the opposite direction. How long were the bat and ball in contact?
Answers: 2
Physics, 22.06.2019 15:50, rosepetals2938
If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?
Answers: 1
Physics, 22.06.2019 16:20, ceasar6071
The energy equivalent of the rest mass of an electron is
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Physics, 22.06.2019 16:40, Crxymia
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".
Answers: 3
A 0.140 kg baseball is thrown with a velocity of 28. m/s It is struck with an average force of 5000....
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