« previous next »

Author Question: A 6.0-kg object, initially at rest in free space, explodes into three segments of equal mass. Two of ... (Read 71 times)

EAugust

  • Hero Member
  • *****
  • Posts: 550
on: Jul 28, 2018
A 6.0-kg object, initially at rest in free space, explodes into three segments of equal mass. Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60 between their directions of motion. How much kinetic energy is released in this explosion?
 a. 2.4 kJ
  b. 2.9 kJ
  c. 2.0 kJ
  d. 3.4 kJ
  e. 1.2 kJ

Question 2

A 2.0-kg object moving 3.0 m/s strikes a 1.0-kg object initially at rest. Immediately after the collision, the 2.0-kg object has a velocity of 1.5 m/s directed 30 from its initial direction of motion. What is the y component of the velocity of the 1.0-kg object just after the collision?
 a. -3.7 m/s
  b. -3.4 m/s
  c. -1.5 m/s
  d. -2.4 m/s
  e. -4.1 m/s


TheDev123

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Office Space Office Space
Spitzer Space Telescope Spitzer Space Telescope
Post–Main-Sequence Evolution of Low-Mass Stars Post–Main-Sequence Evolution of Low-Mass Stars
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
A space-filling model of DNA. A space-filling model of DNA.
How to find the average atomic mass of an element How to find the average atomic mass of an element
Video: Flexor reflex & Crossed extensor reflex

For a complete list of videos, visit our video library