Answer:
one of the characteristics of a mammal is their several hollow bones another is their three chambered heart and the last is highly developed nervous system
Explanation:
the reason i picked those three is because not all mammals live their life on land and also mammals font have internal fertillization when they are done they take care of their babies and when they grow up they live their own life
W=mgh
W=(6)(9.8)(4)
W= 235.2J
Answer:
<em>The range of the ball is 11.6 meters</em>
Explanation:
<u>Projectile Motion
</u>
It's the type of motion that experiences an object launched with an initial angle and moves along a curved path exclusively under the action of gravity.
Being vo the initial speed of the object, θ the initial launch angle, and g the acceleration of gravity, then the maximum horizontal distance traveled by the object (also called Range) is:
![\displaystyle d={\frac {v_o^{2}\sin(2\theta )}{g}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20d%3D%7B%5Cfrac%20%20%7Bv_o%5E%7B2%7D%5Csin%282%5Ctheta%20%29%7D%7Bg%7D%7D)
The football is kicked with an initial speed of vo=11 m/s at an angle of θ=35°.
Calculating the range:
![\displaystyle d={\frac {11^{2}\sin(2\cdot 35^\circ)}{9.8}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20d%3D%7B%5Cfrac%20%20%7B11%5E%7B2%7D%5Csin%282%5Ccdot%2035%5E%5Ccirc%29%7D%7B9.8%7D%7D)
![\displaystyle d={\frac {121\sin(70^\circ)}{9.8}}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20d%3D%7B%5Cfrac%20%20%7B121%5Csin%2870%5E%5Ccirc%29%7D%7B9.8%7D%7D)
d = 11.6 m
The range of the ball is 11.6 meters
Answer:
b
Explanation:
he keep the thermoter in the water longer
Answer:
0.176m from the flagpole, westward.
Explanation:
Let the Eastward be the positive direction. So initially runner A is at position -6km, running with velocity of 9km/h while runner B is at position 5km running at a velocity of -8km/h. We can conduct the following equation for their distances over the same time t
![s_A = -6 + 9t](https://tex.z-dn.net/?f=s_A%20%3D%20-6%20%2B%209t)
![s_B = 5 - 8t](https://tex.z-dn.net/?f=s_B%20%3D%205%20-%208t)
When A an B meets, they are at the same position and at the same time. So
![s_A = s_B](https://tex.z-dn.net/?f=s_A%20%3D%20s_B)
![-6 +9t = 5 - 8t](https://tex.z-dn.net/?f=-6%20%2B9t%20%3D%205%20-%208t)
![17t = 5 + 6 = 11](https://tex.z-dn.net/?f=17t%20%3D%205%20%2B%206%20%3D%2011)
![t = 11/17 = 0.647 s](https://tex.z-dn.net/?f=t%20%3D%2011%2F17%20%3D%200.647%20s)
![s_A = -6 + 9*0.647 = -0.176 m](https://tex.z-dn.net/?f=s_A%20%3D%20-6%20%2B%209%2A0.647%20%3D%20-0.176%20m)
So where they meet is 0.176m from the flagpole, westward.