A man on a unicycle pedals for 2 seconds at a speed of 6 m/s and then pedals another 2 seconds at a rate of 6 m/s. What is the acceleration of the cyclist?

During your summer internship for an aerospace company, you are asked to design a small research rocket. the rocket is to be launched from rest from the earth's surface and is to reach a maximum height of 910 m above the earth's surface. the rocket's engines give the rocket an upward acceleration so it moves with acceleration of 16.0 m/s2 during the time t that they fire. after the engines shut off, the rocket is in free fall. ignore air resistance.

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader