At the same instant that a 0.50 kg ball is dropped from 25 m above earth, a second ball, with a mass of .25 kg, is thrown straight upward from earth's surface with an initial speed of 15 m/s.
they move along nearby lines and pass each other without colliding. at the end of the 2s:
a. what is the height above earth's surface of the center of mass of the two-ball system?
b: what is the velocity of the center of mass of the two-ball system?
c: what is the magnitude of the acceleration of the center of the mass of the two-ball system?
Answers: 3
Physics, 21.06.2019 20:30
When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m
Answers: 2
Physics, 22.06.2019 12:00
For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up
Answers: 2
Physics, 22.06.2019 14:30
Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.
Answers: 2
Physics, 22.06.2019 16:00
The energy produced as a result of this flow of electrons from atom to atom is called
Answers: 3
At the same instant that a 0.50 kg ball is dropped from 25 m above earth, a second ball, with a mass...
History, 28.10.2020 16:30
Computers and Technology, 28.10.2020 16:30
Mathematics, 28.10.2020 16:30
Computers and Technology, 28.10.2020 16:30