Answer:
The magnitude of the boat's velocity is 5.66 m/s
Step-by-step explanation:
Given;
Radius of curvature of the circular path, r = 40 m
speed of the boat, v = 0.8 t m/s
The magnitude of the boat's velocity when it has traveled 20 m is ?
a = dv / dt,
v = 0.8 t (differentiate with respect to t)
dv / dt = 0.8 = a
thus, a = 0.8 m/s²
If the boat starts from rest, initial velocity, u = 0
Apply kinematic equation, to solve for the boat velocity at 20 m
v² = u² + 2as
v² = 0 + 2 x 0.8 x 20
v² = 0 + 32
v² = 32
v = √32
v = 5.66 m/s
Therefore, the magnitude of the boat's velocity when it has traveled 20 m is 5.66 m/s
Answer:
A 16. B 20). C 40 ... 40' 60'| 80. 20 20 20. 2 7 14a. 40 140|| 280'|. BX Hours. Earnings ($).
Step-by-step explanation:
<span>
<span>
</span><span><span>
<span> Selling Price </span>
<span> Cost </span> <span> Profit </span>
<span> Mark up </span>
</span>
<span>
<span>
75.99 </span>
<span> 61.00 </span>
<span> 14.99 </span>
<span> 0.25
</span></span><span><span> 29.95 </span>
<span> 23.75 </span>
<span> 6.20 </span>
<span> 0.26</span></span><span><span>
19.25 </span>
<span> 15.00 </span>
<span> 4.25 </span>
<span> 0.28</span></span><span><span>
1.50 </span><span> 1.19 </span>
<span> 0.31 </span>
<span> 0.26</span></span><span><span>
54.99 </span>
<span> 44.55 </span>
<span> 10.44 </span>
<span> 0.23</span></span><span><span>
12.95 </span>
<span> 10.80 </span>
<span> 2.15 </span>
<span> 0.20
Profit = Selling price - Cost
Mark up = Profit / cost </span></span></span></span>
Answer:
15 b
Step-by-step explanation:
