Physics, 06.12.2021 14:00 geminigirl077
The position of a 2 kg object is given as r(t) = Bt2 + 5, where x is in meters and t is in seconds. (a) Determine the force F responsible for this motion. (3) (b) If the force only results in a change in the kinetic energy of the object of 200 J between t1 = 0 s and t2 = 5 s, determine the value of 3. (3) (c) Without using kinematics (equations of motion), determine the displacement of the object during these 5 seconds referred to in part (b). (2)
Answers: 2
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The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.
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Zamir and talia raced through a maze. zamir walked 2 m north, 2 m east, 4 m south, 2 m east, 4 m north, 2 m east, 3 m south, 4 m east and 4 m north. talia walked 2 m north, 6 m east, 3 m south, 4 m east, and 4 m north. compare their displacements: zamir's displacement is talia's displacement.
Answers: 3
The position of a 2 kg object is given as r(t) = Bt2 + 5, where x is in meters and t is in seconds....
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