m1v1=m2v2 ⇒ v1: v2 = m2:m1 = 4:2 =2:1
-Answered by Shruti Srivastva On 13 July 2020:01:55:02 PM
Question 1. Asked on :13 July 2020:01:53:39 PM
Two objects of masses 2 kg and 4kg are having the same magnitude of momentum. Find the ratio of there speed.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
m1v1=m2v2 ⇒ v1: v2 = m2:m1 = 4:2 =2:1
-Answered by Shruti Srivastva On 13 July 2020:01:55:02 PM
Question 2. Asked on :11 July 2020:06:32:12 PM
What is normal reaction?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Is the force of reaction on a body due to the surface on which it is placed. It acts perpendicular on the surface of contact.
-Answered by Shruti Srivastva On 11 July 2020:06:32:54 PM
Question 3. Asked on :11 July 2020:06:28:58 PM
What is dry friction?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
The orce of friction between solid surface in contact is called dry friction.
-Answered by Shruti Srivastva On 11 July 2020:06:29:28 PM
Question 4. Asked on :11 July 2020:02:06:56 PM
Write the relation between newton and dyne.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
1 newton = 105 dyne.
-Answered by Shruti Srivastva On 11 July 2020:02:07:57 PM
Question 5. Asked on :11 July 2020:02:04:42 PM
Define one dyne.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
One dyne is defined as the force which produces an acceleration of 1cms-2 in a body of mass 1 gram.
-Answered by Shruti Srivastva On 11 July 2020:02:05:29 PM
Question 6. Asked on :11 July 2020:02:02:12 PM
Define one newton force.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
One Newton is defined as the force which produces an acceleration to 1 cms-2 in a body of mass 1 gram.
-Answered by Shruti Srivastva On 11 July 2020:02:03:03 PM
Question 7. Asked on :11 July 2020:01:57:27 PM
State Newton's Second law of motion.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Newton's second law of motion states that the rate of change of momentum of a body is directly proportional to the applied force and the change in momentum takes takes place in the direction of the applied force.
-Answered by Shruti Srivastva On 11 July 2020:01:59:07 PM
Question 8. Asked on :11 July 2020:01:55:18 PM
What is the ratio of SI to the CGS units of momentum?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
The ratio of SI to the CGS units of momentum 105
-Answered by Shruti Srivastva On 11 July 2020:01:56:41 PM
Question 9. Asked on :11 July 2020:01:52:50 PM
What are the SI and CGS units of momentum?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
The SI unit of momentum is kg ms-1 and CGS unit of momentum is g cms-1.
-Answered by Shruti Srivastva On 11 July 2020:01:54:09 PM
Question 10. Asked on :11 July 2020:01:51:06 PM
Write the dimension of momentum.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
[MLT-1]
-Answered by Shruti Srivastva On 11 July 2020:01:51:56 PM
Question 11. Asked on :11 July 2020:01:49:32 PM
Name the scientist who first introduced the concept of momentum?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Issac Newton.
-Answered by Shruti Srivastva On 11 July 2020:01:50:46 PM
Question 12. Asked on :11 July 2020:01:44:24 PM
A piece of cork is floating on water. what is the net force acting on it?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Zero. because the weight of the piece of cork is balanced by the upthrust of water on it.
-Answered by Shruti Srivastva On 11 July 2020:01:45:38 PM
Question 13. Asked on :11 July 2020:01:40:10 PM
State Newton's law of motion.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
According to Newton's first law of motion, every body continues in its state of rest or of uniform motion, unless an external force is applied to change that state.
-Answered by Shruti Srivastva On 11 July 2020:01:41:48 PM
Question 14. Asked on :11 July 2020:01:38:11 PM
Name the scientist who first gave the laws of motion.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Issac Newton.
-Answered by Shruti Srivastva On 11 July 2020:01:39:43 PM
Question 15. Asked on :11 July 2020:01:35:49 PM
Define internal mass of a body?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Internal mass of a body is equal to the force required to produce unit acceleration in the body.
-Answered by Shruti Srivastva On 11 July 2020:01:36:46 PM
Question 16. Asked on :11 July 2020:01:34:10 PM
What give measure of inertia?
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Mass of a body.
-Answered by Shruti Srivastva On 11 July 2020:01:35:31 PM
Question 17. Asked on :11 July 2020:01:31:16 PM
Define the term interia.
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
Inertia is the inherent property of a material body by virtue of which it cannot change, by itself, its state of rest of uniform motion in a straight line.
-Answered by Shruti Srivastva On 11 July 2020:01:32:03 PM
Question 18. Asked on :11 July 2020:01:27:50 PM
State Galileo's law of interia
-Added by Shruti Srivastva Physics » Law Of Motion
Answer:
A body moving in a straight line with a certain speed will continue moving in the same straight line with the same speed in the absence of any external force.
-Answered by Shruti Srivastva On 11 July 2020:01:29:30 PM
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