Question

Using the kinematics equation y = y + y + tat", a classmate writes out the following solution

to find the time when the rocket lands back on Earth. Explain in one sentence, using terms such as
acceleration, velocity, position, constant, changing, and zero, why the solution below is incorrect.
y = y + Vyt+{a,t?
0 = 0+ (0%)t+{(5)

Answer 1

Answer: The solution provided by the classmate is incorrect because the equation y = y + Vyt + (1/2)at^2 should be used instead of the equation y = y + Vyt + (at^2)/2, as the latter incorrectly assumes that acceleration is constant, whereas in reality, acceleration changes over time for a rocket launching and landing scenario.

I hope this helps :)