math question

[Thebman712]

a car going 113km/h accelerates to 127 km/h in 4.35 s. what was the car's acceleration during this time interval?

 

is it ~3.2km/h/s

 

straight out of our practice quiz 

[Interfectorem]

That's what I got. (3.21) It's seconds ^2 BTW. 

[DarkBlade2117]

A = distance divided by time,

Or are we looking for average acceleration?

[aneil1998]

Seems like 3.2km/s

[Thebman712]

That's what I got. (3.21) It's seconds ^2 BTW. 

but the unit of speed is km/h and the unit of time is seconds, if it was m/s then it would be m/s^2

[hsm]

imo the GTX 980 is a better deal.

[Interfectorem]

but the unit of speed is km/h and the unit of time is seconds, if it was m/s then it would be m/s^2

Oh right, it's only in meters per second. So the answer would be 3.2 kmhr / sec

[Thebman712]

Oh right, it's only in meters per second. So the answer would be 3.2 kmhr / sec

WOOOOOOOOOOOOOO WE DID IT REDDIT

imo the GTX 980 is a better deal.

k fam

[Enderman]

but the unit of speed is km/h and the unit of time is seconds, if it was m/s then it would be m/s^2

speed is distance / time not km/h

in physics the standard of velocity is m/s and acceleration is m/s^2

so km/h/s needs to be simplified to m/s^2 by dividing km/h by 3.6 to get m/s

then divide the m/s by s to find the acceleration

 

which is actually ~0.894m/s^2

[Thebman712]

speed is distance / time not km/h

in physics the standard of velocity is m/s and acceleration is m/s^2

so km/h/s needs to be simplified to m/s^2 by dividing km/h by 3.6 to get m/s

then divide the m/s by s to find the acceleration

 

which is actually ~0.894m/s^2

so i got the right awnser just not in the right state?

 

that will be good enough for this test, if my teacher was that picky for a grade 10 test i imagine that he would use m/s rather than km/h