The answer would be a=5 m/s^2
I hope this helps you, have a great day!
When Emmett is lifting a box
vertically, the forces that must be added to calculate the total force are: the
gravitational force, tension force(the force exerted by Emmett to the box and
the force exerted by the box to Emmett), and air resistance force.
Complete Question
An airplane takes off a runway at a constant speed of 49 m/s at constant angle 30 to the horizontal.How high (in meters ) is the airplane above the ground 13 seconds after takeoff?
Answer:
The height is ![H = 318.5 \ m](https://tex.z-dn.net/?f=H%20%20%3D%20%20318.5%20%5C%20m)
Explanation:
From the question we are told that
The speed at which the plane takes off is ![u = 49 \ m/s](https://tex.z-dn.net/?f=u%20%3D%2049%20%5C%20m%2Fs)
The angle at which it takes off is ![\theta = 30 ^o](https://tex.z-dn.net/?f=%5Ctheta%20%20%3D%20%2030%20%5Eo)
The time taken is ![t = 13 s](https://tex.z-dn.net/?f=t%20%3D%20%2013%20%20s)
The vertical distance traveled is mathematically represented as
![H = u sin \theta t](https://tex.z-dn.net/?f=H%20%20%3D%20%20u%20sin%20%20%5Ctheta%20%20t)
Substituting values
![H = (49) * sin (30) *13](https://tex.z-dn.net/?f=H%20%20%3D%20%20%2849%29%20%2A%20sin%20%2830%29%20%2A13)
![H = 318.5 \ m](https://tex.z-dn.net/?f=H%20%20%3D%20%20318.5%20%5C%20m)
Answer:
a toy car speed is about 2.5 to 3.5 mph
Answer: The bond that hold water molecules together are due to shared electrons. The bond of shared electrons is known as a covalent bond.
Explanation: Water is held together by bonds known as covalent bonds, in which electrons are shared by the elements. In this case, the two hydrogen atoms and the one oxygen atom share a bond in which they share electrons, attaining a full outer shell.