Answer:
(B) 29 m/s
Step-by-step explanation:
The kinetic energy (KE) of an object can be calculated using the equation:
KE = (1/2) * m * v^2
where KE represents the kinetic energy, m represents the mass of the object, and v represents the velocity of the object.
Given that the mass of the truck is 1100 kg and the kinetic energy is 4.6 × 10^5 J, we can rearrange the equation to solve for the velocity (v):
KE = (1/2) * m * v^2
Solving for v:
v^2 = (2 * KE) / m
v^2 = (2 * 4.6 × 10^5 J) / 1100 kg
v^2 = 8.36 × 10^2 m^2/s^2
Taking the square root of both sides, we find:
v = √(8.36 × 10^2 m^2/s^2)
v ≈ 28.9 m/s
The speed of the truck is approximately 28.9 m/s.
Among the given options, the closest value to 28.9 m/s is (B) 29 m/s.