Answer:
Assumption: the acceleration of this vehicle is constant until it comes to a stop.
Acceleration: 
.
The acceleration of this vehicle is negative because the velocity of this vehicle is decreasing over time.
Explanation:
- Let
denote the initial velocity of this vehicle. 
. - Let
denote the final velocity of this vehicle. 
as the vehicle has come to a stop. - Let
denote the displacement of this vehicle. 
. - Let
denote the acceleration of this vehicle. The value of 
needs to be found.
Assume that the acceleration of this vehicle, , is constant. The SUVAT equations would apply.
The time 
required for braking is neither given nor required. Hence, make use of the SUVAT equation 
to relate , , , and 
.
Rearrange this equation to find an expression for , the acceleration of this vehicle:
.
- When the rate of change of a value is greater than
, that value would become larger over time. - When the rate of change of a value is equal to , that value would be constant.
- When the rate of change of a value is smaller than , that value would become smaller over time.
Acceleration is the rate at which velocity changes over time.
The velocity of the vehicle in this question is getting smaller over time. Hence, the rate of change of the velocity of this vehicle (that is, the acceleration of this vehicle) would be a negative number.
Answer:
1 gm = 1000 mg
N = No e^-y t where y = lambda the decay constant
N / N0 = .9969
ln .9969 = - y t
-.00310 = - 5 y
y = .00310 / 5 = .000621
So the half-life = .693 / y
T^1/2 = .693 / .000621 = 1116 or about 1120 yrs
Answer:
D
Explanation:
cause the slope works with going up or down
Answer: An exercise, activity, or workout that targets a specific training need Progression - Gradually increasing your skill level and ability over time Overload -Working your body harder than usual to improve how it functions Reversibility - Losing what you have gained by taking time off Tedium - getting bored by doing the same thing
Explanation:
Answer: Core muscles protect the spine and keeps it stabilized. Also they can help control movements such as walking and standing. The core helps transfer energy and help us move in different directions. It's important to have a strong set of core muscles.
Explanation:
