Question

2 Kg mass has kinetic energy of 16 joule when its speed is: 1

(a) 2 m/s
(b) 1 m/s
(c) 1.414 m/s (d) 4 m/s​

Answer 1

Answer:

(d) 4 m/s

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Answer 2

Answer:

The speed of 2 kg will be 4 m/s.

Explanation:

Given, the mass = 2 kg

Kinetic energy = 16 joule

As the formula of kinetic energy = $\frac{1}{2}$×m×$v^{2}$

                                            16 = $\frac{1}{2}$×m×$v^{2}$

                                            16 ×2 = 2 ×$v^{2}$

                                              $\sqrt{16}$ = v

                                            4 m/s = v

Hence the answer will be option (d) 4 m/s