SATHEE: Work Energy And Power Question 299

Work Energy And Power Question 299

Question: A shell is fired from a cannon with a velocity v (m/sec.) at an angle 9 with the horizontal direction. At the highest point in its path it explodes into two pieces of equal mass. One of the pieces retraces its path to the cannon and the speed (in m/sec.) of the other piece immediately after the explosion is

Options:

A) $3 v c o s θ$

B) $2 v c o s θ$

C) $\frac{3}{2} v c o s θ$

D) $\sqrt{\frac{3}{2}} v c o s θ$

Show Answer

Answer:

Correct Answer: A

Solution:

[a] As one piece retraces its path, the speed of this piece just after explosion should be $v c o s θ$ (At highest point just after explosion) Applying conservation of linear momentum at the highest point; $m (v \cos θ) = \frac{m}{2} \times v^{'} - \frac{m}{2} \times v \cos θ$

$3 v \cos θ = v^{'}$

Work Energy And Power Question 299

Options:

Answer:

Solution:

Engineering Preparation

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Work Energy And Power Question 299

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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