SSC MTS EXAM

SSC

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If all objects are moving as the exact same speed, which would have the greatest kinetic energy?
A
tennis ball
B
football
C
notebook
D
box of 20 textbooks
Explanation: 

Detailed explanation-1: -The answer is false. An object with less speed and more mass could potentially have the same Kinetic energy. The equation for Kinetic Energy is: KE = 1/2 mv2. Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object. The same is true of velocity.

Detailed explanation-2: -Two objects of varying mass have the same momentum. The least massive of the two objects will have the greatest kinetic energy.

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