Question

How fast is the object moving if an object has a kinetic energy of 88 J and a mass of 45 kg?

Options:
A. 1.96 m/s
B. 2.63 m/s
C. 3.14 m/s
D. 4.24 m/s

Answer 1

The object is moving at a speed of approximately B)2.63 m/s.

Step-by-step explanation:

To find the velocity of the object, we can use the formula for kinetic energy:

KE = \frac{1}{2}mv^2

Given that the kinetic energy is 88 J and the mass is 45 kg, we can rearrange the formula to solve for velocity:

v = \sqrt{\frac{2KE}{m}}

Plugging in the values:

v = \sqrt{\frac{2(88)}{45}} \approx 2.63 \,\text{m/s}

Therefore, the object is moving at a speed of approximately 2.63 m/s.