Question

calculate the KE
of a body of mass 0.5
kg and momentum
100kg m/sec​

Answer 1

Answer:

10000 J

Explanation:

K = $\frac{1}{2} mv^{2}$

⇒ Km = $\frac{1}{2} (mv)^{2}$

⇒ Km = $\frac{1}{2} p^{2}$

⇒ 2Km = p²

⇒ K = $\frac{p^{2}}{2m}$

Given :

m = 0.5 kg

p = 100 kgm/s

Procedure :

K = $\frac{100 \times 100 }{2 \times 0.5}$ J

∴ K·E = 10000 J or 10⁴ J

Thanks !