A solid wooden door, 90 cm wide by 2.0 m tall, has a mass of 35 kg. It is open and at rest. A small 500-g ball is thrown perpendicular to the door with a speed of 20 m/s and hits the door 60 cm from the hinged side, causing it to begin turning. The ball rebounds along the same line with a speed of 16.0 m/s relative to the ground. How much energy is lost during this collision?

Question

A solid wooden door,  90 cm wide by  2.0 m tall, has a mass of  35 kg. It is open and at rest. A small  500-g ball is thrown perpendicular to the door with a speed of  20 m/s and hits the door  60 cm from the hinged side, causing it to begin turning. The ball rebounds along the same line with a speed of  16.0 m/s relative to the ground. How much energy is lost during this collision?

Quizplus · Accepted Answer

The Answer of A solid wooden door,  90 cm wide by  2.0 m tall, has a mass of  35 kg. It is open and at rest. A small  500-g ball is thrown perpendicular to the door with a speed of  20 m/s and hits the door  60 cm from the hinged side, causing it to begin turning. The ball rebounds along the same line with a speed of  16.0 m/s relative to the ground. How much energy is lost during this collision?

A Solid Wooden Door, 90 Cm Wide by