Answer:
a) a = 1 [m/s²]
b) a = 0.25 [m/s²]
Explanation:
To solve this problem we must use the following equation of kinematics.
a)
Between 0 and 2 seconds
where:
Vf = final velocity = 2 [m/s]
Vo = initial velocity = 0
a = acceleration [m/s²]
t = time = 2 [s]
Note: the positive sign of acceleration in the previous equation allows us to appreciate that the velocity is increasing
2 = 0 + a*2
a = 2/2
a = 1 [m/s²]
b)
Between 2 and 4 seconds
where:
Vf = final velocity = 2.5 [m/s]
Vo = initial velocity = 2
a = acceleration [m/s²]
t = time = (4 - 2) = 2 [s]
2.5 = 2 + a*2
2.5 - 2 = 2*a
0.5 = 2*a
a = 0.25 [m/s²]
Answer:Electromagnetic Energy Example One
activity: cellphones
type of electromagnetic: radio waves
description: we all use our phones to make phone calls and to send a text!
Electromagnetic Energy Example two
activity: microwave
type of electromagnetic: microwave radiation
description: The microwave radiation is absorbed by water molecules in the food which converts to heat intern heats the food do to high levels of radiation being emitted into the food!
Explanation:
i hope this helps you sorry if it doesn't
Answer:
3.2 seconds
Explanation:
When the cars collide, they have the same position.
x₁ = x₂
-4 + 1.1t = 8.8 − 2.9t
4t = 12.8
t = 3.2
Your answer is c hope I helped
That’s the acceleration law! This would be a good example of inertia! When in a car, if the brakes are pressed immediately, the passengers will launch forward since their bodies are still in motion!