A rocket fires its engines to launch straight up from rest with an upward acceleration of 5 m/s2 for 10 seconds. After this time, the engine shuts off and the rocket freely falls straight down back to Earth's surface.

The Complete Question is added below

c) Velocity of the of the rocket after the first 10sec of travel is

From the Question we are told that

Upward acceleration of 5 m/s^2 for 10 seconds

Rocket freely falls straight down back to Earth's surface

Generally the Newtons equation for Velocity  is mathematically given as

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The graph is the answer to the question.

Explanation:

The rocket launches straight up, and the acceleration is constant.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me