- #1
Firebird
- 10
- 0
Hello!
in Physics we just started acceleration
We were givin 3 equations
v=V(not) + at
x=V(not)t + 1/2at(Squared)
V(Squared) =V(not) + 2ax
Can someone please explain the variables and how to figure them out.
With those equations I need to figure problems like this
The speed limit in a school zone is 44 km/h. A driver traveling at this speed sees a child run onto the road 11 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 10.5 m/s2. If the driver's reaction time is 0.65 s, will the car stop before hitting the child?
YES OR NO
What is the stopping distance of the vehicle in m?
And
A boy throws a stone straight upward with an initial speed of 18 m/s. What maximum height will the stone reach before falling back down
I really don't know where to start. I normally start listing the varables like
V=
a=
t=
x=
But I do not understand what numbers to put in which areas,
Thank you very much
in Physics we just started acceleration
We were givin 3 equations
v=V(not) + at
x=V(not)t + 1/2at(Squared)
V(Squared) =V(not) + 2ax
Can someone please explain the variables and how to figure them out.
With those equations I need to figure problems like this
The speed limit in a school zone is 44 km/h. A driver traveling at this speed sees a child run onto the road 11 m ahead of his car. He applies the brakes, and the car decelerates at a uniform rate of 10.5 m/s2. If the driver's reaction time is 0.65 s, will the car stop before hitting the child?
YES OR NO
What is the stopping distance of the vehicle in m?
And
A boy throws a stone straight upward with an initial speed of 18 m/s. What maximum height will the stone reach before falling back down
I really don't know where to start. I normally start listing the varables like
V=
a=
t=
x=
But I do not understand what numbers to put in which areas,
Thank you very much