Answer:
Step-by-step explanation:
To calculate the average power of the toy car, we need to know the total change in kinetic energy of the car and the total time over which the change occurred. The change in kinetic energy of an object is given by the formula
ΔK = 1/2 * m * Δv^2
where m is the mass of the object, and Δv is the change in velocity of the object. In this case, the mass of the car is 0.6 kg and the change in velocity is 5 m/s - 1 m/s = 4 m/s. Plugging these values into the formula above, we get:
ΔK = 1/2 * 0.6 kg * 4 m/s^2 = 1.2 kg * m^2 / s^2
Now that we know the change in kinetic energy, we can calculate the average power of the car using the formula:
P = ΔK / Δt
where P is the power, ΔK is the change in kinetic energy, and Δt is the time over which the change occurred. In this case, the time over which the change occurred is 3 seconds, so plugging these values into the formula above, we get:
P = 1.2 kg * m^2 / s^2 / 3 s = 0.4 kg * m^2 / s^3
The average power of the toy car is 0.4 kg * m^2 / s^3.