Author Question: The ratio of kinetic energy of object A to the kinetic energy of object B is 2:1. Object A is moving ... (Read 124 times)

FButt · **on:** Jul 29, 2018

The ratio of kinetic energy of object A to the kinetic energy of object B is 2:1. Object A is moving with a speed of 6.0 m/s and object B is moving with a speed of 2.0 m/s. If the mass of object A is 4.0 kg then what is the mass of object B?

A) 2.0 kg
B) 4.0 kg
C) 8.0 kg
D) 18 kg
E) 16 kg

Question 2

The ratio of the kinetic energy of object A to the kinetic energy of the object B is 2:1. The mass of object A is 2.0 kg and the mass of object B is 4.0 kg. If object A has a speed of 4.0 m/s, what is the speed of object B?

A) 8.0 m/s
B) 6.0 m/s
C) 4.0 m/s
D) 1.4 m/s
E) 2.0 m/s