- #1
KingNothing
- 882
- 4
Here is a problem from a worksheet I have..I'm having a little trouble with it. My teacher neglected to explain most of it:
Now, I know everything is done in m/s, so that's 100/9 m/s. I know what the problem is asking and everything..but I don't have any formulas that I can use (I don't think)...in this case, can acceleration be used the same as deceleration? Is it okay to just put it in an equation as a negative?
A coffee cup on a dashboard of a cars slides forward if the driver decelerates from 40 km/h to rest in 3.5 seconds, but doesn't slide if it takes any longer.
Now, I know everything is done in m/s, so that's 100/9 m/s. I know what the problem is asking and everything..but I don't have any formulas that I can use (I don't think)...in this case, can acceleration be used the same as deceleration? Is it okay to just put it in an equation as a negative?