kirillanisimovp08nm9

25.05.2023 14:20 •  Физика

Exercise 1.
the stone is falling from a height of h = 1200 m. what path s will the stone go in the last second of its falling?
exercise 2.
the movement of a point along a circle with a radius of r = 4 m is given by the equation = a +bt + ct 2, where a = 10 m, b = -2 m/s, c = 1 m/s. find the tangential at, normal an and the full
a acceleration of the point at time t = 2 s.
exercise 3. determine the period t, the frequency v, and the initial phase o of the oscillations
given by law of oscillatory motion x = a sin ш (t+т), where ш = 2.51 пs-1, т= 0.4 s.
exercise 4. the law of oscillatory motion is expressed x = a cos шt, where a = 5 cm; ш = 2 s-1.
determine the acceleration | a | at a time when its velocity was v = 8 cm/s.