No, you have the wrong answer. Here’s a hint – you need to make your time measurements match before you can complete the problem. In other words you need to change hours into seconds, or seconds into hours.

Try again and good luck.

Your answer should be expressed in km/s^2 – or kilometers per second squared. Unless you are taking an extremely basic (non scientifically based physics course) – I can’t imagine anyone teaching a method that kept mixed time units in an answer.

Essentially right up until your answer. You should have 10 (km/hr)/s. You’re increasing your speed by 10 km/hr every second, which is what the acceleration is telling you. A more common way of expressing this would be

10 km/(hr s)

or “ten kilometers per hour second”.

one thank you to help comprehend what’s happening is to bear in suggestions F=ma. in case you have a fastened mass, then tension and acceleration are interior an identical direction and are proportional. it particularly is much less annoying to think of appropriate to the tension each and every now and then. So an increasing downwards (-ve) tension ability an increasing downwards (-ve) acceleration to illustrate. Please take at look at my video interior the link, which ought to help. _______________________________________… a) The graph would not’ propose acceleration is increasing. The acceleration is destructive (take destructive as ‘to the left’ say); it reduces in value until at last it fairly is 0, then it fairly is to the final (beneficial) and increasing. it particularly is corresponding to the effect of pushing something to the left, easing up, then pushing to the final. you will exchange the speed in spite of the undeniable fact that it it you are able to not say something definite approximately this – it would rely on the object’s preliminary speed (which would be table sure, or to the left or to the final, quickly or gradual). B) No – a top in accleeration does not propose decleration. think of tension. in case you push something and attain a top tension, the acceleration reached a top, in case you decrease the tension, you’re nevertheless producing acceleration, purely not as plenty C) The destructive sign purely tells you the direction. E.g. ‘g’ is often taken as -9.8m/s^2; the destructive sign ability downwarss. An merchandise with a superb speed (i.e. going up) is slowed down; an merchandise with a destructive speed (i.e. happening) hurries up.