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Pooja asked a question
Subject: Science, asked on on 18/12/17
Q. Two masses undergo a perfect elastic head on collision.The first mass 'm' moves with initial velocity 50 m/s in the positive x direction . The second mass '2m' with initial velocity 40 m/s negative x direction . (i) Calculate their final velocities, (ii) What is the ratio of the final K.E. to the initial K.E. for mass 'm' (iii) Calculate the change in momentum of masses m and 2m if m = 1 kg. (iv) What is the change in momentum of the system?
Armah Salomey asked a question
Subject: Science, asked on on 30/5/19
A bus travelling at 20m/s along a straight road passed by a stationary taxi cab.The cab begins to move 5s later with a uniform acceleration 2ms-2 in a same direction as the bus.Calculate the, a. the time taken by the cab to catch up with the bus b.distance the cab travelled to catch up with the bus
Rakshita asked a question
Subject: Science, asked on on 5/10/18
the rice harvest festival of Bali is called dash
Amar Subhash Dhakare asked a question
Subject: Science, asked on on 26/6/18
9th history book chapter 1st sources of history page number 4 questions number 2 write short notes please give me answer.
Smita asked a question
Subject: Science, asked on on 26/9/19
Science subject , Fill in the blanks
Pooja asked a question
Subject: Science, asked on on 19/12/17
Solve this:

Q. Two masses undergo a perfectly elastic head on collision. The first mass m moves with initial velocity of 50 m/s in the + ve x direction . The second mass 2m moves with initial velocity of 40 m/s in the – ve x direction.
(i) Calculate their final velocities (ii) What is the ratio of their final K.E to the initial K.E for mass 'm' (iii) calculate the change in momentum of masses m and 2 m if milk (iv) What is the change in momentum of the system :
 
Abhishek Mishra asked a question
Subject: Science, asked on on 29/8/18
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Subject: Science, asked on on 5/10/18
When a body falls freely to the ground,its motion has a uniform acceleration?
Shaikh Ajaz asked a question
Subject: Science, asked on on 27/7/18
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Smita asked a question
Subject: Science, asked on on 26/9/19
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Tanvi Deore asked a question
Subject: Science, asked on on 12/10/20
A cart with a mass 20kgwent 50m in a straight line on a plane and smooth road with a force of 2N was applied to it. How much work was done by the force?
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Subject: Science, asked on on 29/8/18
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Subject: Science, asked on on 19/10/19
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Subject: Science, asked on on 30/9/19
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Subject: Science, asked on on 6/9/21
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Eliel asked a question
Subject: Science, asked on on 19/8/20
Knowing law of conservation of energy and how to calculate KE and PE fill in the missing blanks at the various marked position for a 900-kg roller coster car ( remember gravity 9.81m/s? ) **hint always find Ke and Pe FIRST
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Subject: Science, asked on on 19/8/20
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Subject: Science, asked on on 27/10/21
Bike starts from rest and attains the velocity of 35 m/sec in 7 seconds. Calculate the
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Subject: Science, asked on on 3/10/20
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Subject: Science, asked on on 16/2/21
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Subject: Science, asked on on 30/7/20
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Subject: Science, asked on on 3/10/20
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Subject: Science, asked on on 3/10/20
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Subject: Science, asked on on 19/4/21
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Subject: Science, asked on on 13/2/21
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Subject: Science, asked on on 5/10/20
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Subject: Science, asked on on 22/1/21
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Subject: Science, asked on on 15/9/21
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Subject: Science, asked on on 2/10/20
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Subject: Science, asked on on 22/10/21
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Subject: Science, asked on on 3/10/20
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