A 3.0-kg mass is released from rest at point A of a circular frictionless track of radius 0.40 m as shown in the figure. The mass slides down the track and collides with a 1.4-kg mass that is initially at rest on a horizontal frictionless surface. If the masses stick together, what is their speed after the collision?
A) 2.1 m/s
B) 1.7 m/s
C) 1.9 m/s
D) 1.5 m/s
E) 2.3 m/s

Question

A 3.0-kg mass is released from rest at point A of a circular frictionless track of radius 0.40 m as shown in the figure. The mass slides down the track and collides with a 1.4-kg mass that is initially at rest on a horizontal frictionless surface. If the masses stick together, what is their speed after the collision? 
A) 2.1 m/s 
B) 1.7 m/s 
C) 1.9 m/s 
D) 1.5 m/s 
E) 2.3 m/s

Quizplus · Accepted Answer

The Answer of A 3.0-kg mass is released from rest at point A of a circular frictionless track of radius 0.40 m as shown in the figure. The mass slides down the track and collides with a 1.4-kg mass that is initially at rest on a horizontal frictionless surface. If the masses stick together, what is their speed after the collision? 
A) 2.1 m/s 
B) 1.7 m/s 
C) 1.9 m/s 
D) 1.5 m/s 
E) 2.3 m/s

A 30-Kg Mass Is Released from Rest at Point a of of a Circular