I believe the correct answer from the choices listed above is option B. The statement that is true about the kinetic energy would be that the <span>ball has the least kinetic energy at the top of its flight. Hope this answers the question. Have a nice day.</span>
Answer: 146.1 kg/m/s
Explanation: Momentum is equal to mass times velocity, so you do 9.74 kg times 15 m/s and get 146.1 kg/m/s.
Answer:
a) 2232nm
b) 2511nm
Explanation:
a) To find the path difference Δl you use the following formula:

m: order of a bright fringe
λ: wavelength of light = 558nm
for m=4:

b) The path difference for the case of destructive interference you have:

m: order of a dark fringe
for m=4:

Answer:
The value of t₁ is 5.119 sec.
Explanation:
Given that,
Acceleration = 12.7 m/s²
Total distance 
Time = 94.6 sec
We need to calculate the distance
Using equation of motion

Put the value into the formula
...(I)
We need to calculate the velocity
Using equation of motion

Put the value into the formula


The sled while moves with constant velocity v for time t₂
Using formula of distance


The total distance is

Put the value of s₁ and s₂

...(II)
The total time is
....(III)
From equation (II) and (III)
After solving

Hence, The value of t₁ is 5.119 sec.