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CBSE Class 11-science Answered

Sorry im confused,but my question is
Asked by samvedh12 ammisetti | 09 Sep, 2012, 10:48: PM
answered-by-expert Expert Answer
The velocity is not constant. The velocity will decrease as soon as the car hits the wall.
If we can find out the rate of acceleration of the car to stop then we can find the force exerted on the wall but since that is impossible to find and is usually not constant but keeps varying so in such situations we use the conservation of momentum princile to find the momentum change and then using time taken to stop and the second law we find the force exerted on the wall
Answered by | 09 Sep, 2012, 10:51: PM

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CBSE 11-science - Physics
Respected Ma'am/Sir please clarify my doubt.
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Asked by pranavsrinivas82 | 08 Jan, 2024, 11:30: PM
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CBSE 11-science - Physics
a block of mass m is pulled along a horizontal smooth surface by a rope of mass m force p applied at one end of rope force which the rope exert on block is
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Asked by rame123shshiv | 14 Nov, 2023, 06:18: AM
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CBSE 11-science - Physics
second law of motion
Asked by kfcispuppy | 30 Sep, 2023, 10:06: AM
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CBSE 11-science - Physics
Two blocks of mass m=5kg and M=10 kg are connected by a string passing over a pulley B as shown. Another string connects the centre of the pulley B to the floor and passes over another pulley A as shown. An upward force F is applied at the centre of pulley A. Both the pulleys are massless. Find the acceleration of both the blocks if 1) F=100N.  2)F=500N
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Asked by sakethrockzz007 | 14 Aug, 2023, 04:30: PM
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CBSE 11-science - Physics
A block of mass m is placed on a wedge as shown. Find difference between maximum and minimum (a(max) – a(min) ) horizontal rightward acceleration of wedge for which block remains at rest with respect to wedge. (A) 10g/9 (B) g/9 (C) g (D) None of these
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Asked by sahuaryanbro1.0 | 01 Jan, 2023, 10:17: PM
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CBSE 11-science - Physics
A force 50 N acts on a body for 10 sec.what will be the change in momentum
Asked by subhankarnanda123 | 20 Dec, 2022, 08:36: PM
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CBSE 11-science - Physics
answer
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Asked by divyanshkr13 | 16 Jun, 2022, 10:25: AM
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CBSE 11-science - Physics
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Asked by kashyspalbert91 | 11 Mar, 2022, 04:11: PM
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CBSE 11-science - Physics
In the arrangement shown in the figure, a heavy pulley of mass M is suspended from a spring of stiffness constant K and the mass m is suspended from a string tightly wound on the pulley. If the mass m is given a small downward displacement and released, find the time period of small oscillations (Take pulley as Disc) and string does not slips on the pulley.
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Asked by alkrishna4652 | 24 Feb, 2022, 01:46: PM
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CBSE 11-science - Physics
what is 2 law of motin
Asked by shreyamishra270304 | 04 Aug, 2021, 08:32: AM
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