Question

What is the velocity of a ball rolling with a kinetic energy of 3650 J? The ball has a mass of 1.875 kg.

Answer 1

$\huge\purple{\boxed{\underline{ANSWER}}}$

✓GIVEN THAT

• The kinetic energy of rolling ball (k.E) = 3650 j

• Mass of ball (m) = 1.875 kg

✓ FORMULA ✓

$K.E \: = \frac{1}{2} m \: {v}^{2}$

✓ SOLUTION ✓

$3650 = \frac{1}{2} \times 1.875 \times {v}^{2} \\ \implies \: {v}^{2} = \frac{3650 \times 2}{1.875} \\ \implies \: {v}^{2} = 3893.33 \\ \implies \: v = 62.39$

• The velocity of Ball = 62.39 m/s