Question

A jet goes from 10,000 Ns to 5,000,000 Ns in 20 seconds. What is the expected force? What is the acceleration if the jet has a mass of 10,200 kg?

a) The expected force is 500,000 N. The acceleration is 25,000 m/s².
b) The expected force is 250,000 N. The acceleration is 12,500 m/s².
c) The expected force is 2,500,000 N. The acceleration is 125,000 m/s².
d) The expected force is 1,000,000 N. The acceleration is 50,000 m/s².

Answer 1

The expected force is 249,500 N and the acceleration is 24.4 m/s².

Step-by-step explanation:

To calculate the expected force, we can use Newton's second law, which states that force is equal to mass multiplied by acceleration (F = ma). In this case, the acceleration is the change in velocity divided by the time taken. So the expected force is (5,000,000 Ns - 10,000 Ns) / 20 s = 249,500 N.

As for the acceleration, we can use the formula F = ma rearranged to a = F/m. Plug in the values for force (249,500 N) and mass (10,200 kg), and we get an acceleration of approximately 24.4 m/s².