그 27
15
Xs) 2
SECTION TWO
LINEAR DYNAMICS, WORK ENERGY & POWER, SYSTEM OF
PARTICLES, CONSERVATION OF MOMENTUM
8. Okoro and Okafor weigh 70kg and 50kg respectively and push against each
other. If Okoro pushes Okafor by a force of 700N, Okafor has pushed Okoro
with
A. 500N
B. O
C. 700N
D. 250N
totine
Solution
Inicio
Correct option
Reason

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)