An object has a kinetic energy of 48 J and a mass of 6 kg, how fast is the object moving?
a
16 m/s^2
b
3 m/s^2
c
4 m/s^2
d
8 m/s^2
The correct answer is d) 8 m/s^2.
The formula for kinetic energy is KE = (1/2)mv^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity.
We can rearrange this formula to solve for v:
v = √(2KE/m)
Plugging in the given values, we get:
v = √(2*48/6) = √16 = 4 *Note: The unit of velocity is meters per second (m/s), not meters per second squared (m/s^2)*
Therefore, the object is moving at a speed of 4 m/s.