Answer:
e. Only the rocket's motion from the top of its flight path until just before landing is free-fall.
Explanation:
A free-fall is a fall just under force of gravity. The rocket;s upward motion is result of engine push - even if it was shut down - and rocket free of engine push effect when it reaches it's maximum height after shutting down of engine. Then rockets stops at it's maximum height for a moment and rtuens back as free fall with only force of gravitation pulling it back to ground with acceleration 'g'.
Acceleration is change in velocity over time --> 
Δv or change in velocity equals the Final velocity minus the initial velocity
Our initial velocity here is 60m/s while our final velocity is 0 m/s
The time interval is 85 seconds so...



The negative is there to indicate that the train in slowing down or decelerating
"Transverse" means that <span>the molecules of the medium vibrate
at right angles to the direction in which the wave travels.
</span>
Answer:
R = 42.67 ohms
Explanation:
It is given that, a thin-filament light bulb is connected to two 1.6 V batteries in series, the current is 0.075 A.
It means that when two batteries are connected in series, then the total voltage is 3.2 volts
Let R is the resistance of the glowing thin-filament bulb. So, using Ohm's law we get :

So,

So, the resistance of the bulb is 42.67 ohms.
Carbon Dioxide is what you are looking for