A man runs at a speed of 4 m/s to overtake a standing bus. When he is om behind the door (t=0), the bus moves forward and continues with a constant acceleration of 1.2 m/s^2. How long does it take for the man to gain the door?

it doesn't. it was imagined up in the middle ages.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

this would be about 43%

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.