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: (24.02,25.98)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given : Sample size : n= 100
Sample mean :
Standard deviation :
Significance level :
Critical value :
The confidence interval for population mean is given by :-
Hence, the 95% confidence interval for the population mean of training times is (24.02, 25.98).
Answer: 7
Step-by-step explanation: