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Find the mass of a body …

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Find the mass of a body which has 5J of kinetic energy while moving at a speed of 2m/s.

Posted by Sakshi Sharma 1 year, 8 months ago

CBSE > Class 09 > Science

5 answers

Vaibhav Verma 1 year, 8 months ago

Given ÷ Ek. = 5J v= 2m/s Ek. = 1/2 mv^2 5 = 1/2 × m × (2) ^2 5 = 1/2 × m × 4 On further calculations. 5 = 1/2 × m 5 × 1/2 = m 2.5 kg = m Hence solved.

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Saumya Gaur 1 year, 8 months ago

K.E = 1/2 mv² ........................ , 5 = 1/2 ×m × 2² ................................. , 5 = 1/2 ×m × 4 ........................... , 5 = 4/2 m......................................., 5 = 2m ..........., 5/2 =m .......... , "2.5 = m " answer ......

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Saumya Gaur 1 year, 8 months ago

2.5 kg K.E = 1/2 mv² 5 =1/2 ×m × 2² 5 =4/2m 5 = 2m 5/2 = m 2.5 =m

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Vivek Kumar 1 year, 8 months ago

2.5 kg

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Unknown Soul 1 year, 8 months ago

K.E=½mv² 5=½×m×2×2 5=2m 5/2=m 2.5kg=mass

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