An object starts with an initial speed of 0 and moves with an acceleration 0.5m/s² for 30 seconds THEN it keeps moving with constant speed for another 30 seconds AND the last 30 seconds moves with an acceleration-0.5m/s² until it stops . •DRAW A "VELOCITY- TIME" GRAPH•

did I solve it correctly?

thanks​

Amass has an acceleration of 10- 2t. what is its velocity and displacement if it started at x- 4m and the initial velocity was 8m/s? at what time does it have 0 velocity? graph all graphs.

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain