Answer: Its B
Step-by-step explanation: Hope this helps you
Answer:
-10.4 m/s
Step-by-step explanation:
Given:
x = -26.5 m
x₀ = 0 m
a = -1.80 m/s²
t = 3.81 s
Constant acceleration equation:
x = x₀ + v₀ t + ½ at²
-26.5 = 0 + v₀ (3.81) + ½ (-1.80) (3.81)²
v₀ = -3.53
The initial velocity was -3.53 m/s. So the final velocity is:
v = at + v₀
v = (-1.80) (3.81) + (-3.53)
v = -10.4 m/s
Answer: 15
Step-by-step explanation:
For this question you have to use pythagoras' theorem.
Pythagoras' theorem is c²=a²+b²
So c is the hypotenuse and the hypotenuse is always opposite the right angle.
So the equation would be c²=9²+12²
Then 9²=81 and 12²=144
So the equation would then be c²=81+144
So c²=225
Then you just want to find c on it's own so you have to square root it which is 15.