A 1200 kg car is moving at 5.0 m/s EAST. It strikes an 1800 kg car at rest. The cars have an elastic collision and move in the EAST or WEST direction. The velocity of the 1200 kg car after the collision is
A. 4.0 m /s EAST.
B. 1.0 m/s EAST.
C. 4.0 m/s WEST.
D. 1.0 m/s WEST.
E. 3.00 m/s EAST.
D. 1.0 m/s WEST.
You might also like to view...
A 250-kg crate is on a rough ramp, inclined at 30° above the horizontal. The coefficient of kinetic friction between the crate and ramp is 0.22. A horizontal force of 5000 N is applied to the crate, pushing it up the ramp
What is the acceleration of the crate? A) 8.4 m/s2 B) 10 m/s2 C) 12 m/s2 D) 13 m/s2 E) 3.4 m/s2
If two identical wires carrying a certain current in the same direction are placed parallel to each other, they will experience a force of repulsion
Indicate whether the statement is true or false
Which of the following general statements about Earth's atmosphere is not true?
A) The oxygen in our atmosphere was released by living organisms. B) Without the relatively rare gas called ozone, Earth's surface would be bathed in dangerous ultraviolet light from the Sun. C) The nitrogen and oxygen in Earth's atmosphere keep the surface pleasantly warm. D) Gas high in the atmosphere absorbs dangerous X-rays from the Sun.
You and your friend, who weighs the same as you, want to go to the top of the Eiffel Tower. Your friend takes the elevator straight up. You decide to walk up the spiral stairway, taking longer to do so
Compare the gravitational potential energy of you and your friend, after you both reach the top. A) It is impossible to tell, since the times you both took are unknown. B) It is impossible to tell, since the distances you both traveled are unknown. C) Your friend's gravitational potential energy is greater than yours, because he got to the top faster. D) Both of you have the same amount of gravitational potential energy at the top. E) Your gravitational potential energy is greater than that of your friend, because you traveled a greater distance in getting to the top.