Physics, 29.06.2019 04:20, 22chandlerlashley
A0.144 kg baseball moving 28.0 m/s strikes a stationary 5.25 kg brick resting on small rollers so it moves without significant friction. after hitting the brick, the baseball bounces back, and the brick moves forward at 1.1 m/s (a) for determining baseball's speed after the collision, do you need to use momentum conservation, energy conservation or both? give reasons for your answer (marks will only be awarded if reasoning is qiven). (b) what is the baseball's speed after the collision? (c) find the total mechanical energy before and after the collision. (d) show that the collision is inelastic. (e) is the kinetic energy of the system conserved? give a reason. (f is the total energy of the system conserved? give a reason
Answers: 2
Physics, 23.06.2019 08:30, studentstudies9816
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
A0.144 kg baseball moving 28.0 m/s strikes a stationary 5.25 kg brick resting on small rollers so it...
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