Two gliders collide on an air track. Glider 1 has a mass of 7.0 kg, and glider 2 has a mass of 4.0 kg. Before the collision, glider 1 had a velocity of 2.0 m/s, and glider 2 had a velocity of -5.0 m/s. If the collision is perfectly elastic, what is the total kinetic energy of both gliders after the collision? A. -36.0 J
B. 36.0 J
C. 64.0 J
D. 128.0 J

the answer is d on edge

step-by-step explanation:

c > -10.55

step-by-step explanation:

answer:

c) the x-coordinate of the center of the circle increases by 3

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches