A ball whose kinetic energy is E, is thrown at an angle of 45∘ with the horizontal, its kinetic energy at the highest point of its flight will be-

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A ball whose kinetic energy is {E}, is thrown at an angle of 4

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A ball whose kinetic energy is $E$ , is thrown at an angle of $4 5^{\circ}$ with the horizontal, its kinetic energy at the highest point of its flight will be-

\frac{E}{2}

\frac{E}{2}

Zero

Views: 5,940 students

Updated on: Feb 4, 2023

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Chloe Discussed

A ball whose kinetic energy is

E

, is thrown at an angle of

4 5^{\circ}

with the horizontal, its kinetic energy at the highest point of its flight will be-

14 mins ago

Discuss this question LIVE

14 mins ago

Text solutionVerified

At the highest point of its flight, vertical component of velocity is zero and only horizontal component is left which is

u_{x} = u cos θ

Given

θ = 4 5^{\circ}

∴ u_{x} = u cos 4 5^{\circ} = \frac{u}{2}

Hence, at the highest point kinetic energy

E^{'} = \frac{1}{2} m u_{x}^{2} = \frac{1}{2} m (\frac{u}{2})^{2}

= \frac{1}{2} m (\frac{u ^{2}}{2})

= \frac{E}{2} (∵ \frac{1}{2} m u^{2} = E)

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Question Text	A ball whose kinetic energy is $E$ , is thrown at an angle of $4 5^{\circ}$ with the horizontal, its kinetic energy at the highest point of its flight will be-
Updated On	Feb 4, 2023
Topic	Work, Energy and Power
Subject	Physics
Class	Class 11
Answer Type	Text solution:1 Video solution: 11
Upvotes	1177
Avg. Video Duration	8 min

A ball whose kinetic energy is $E$ , is thrown at an angle of $4 5^{\circ}$ with the horizontal, its kinetic energy at the highest point of its flight will be-

Text solutionVerified

Filo tutor solutions (11)

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