Answer:
D. gravity
Explanation:
Gravity keeps the atmosphere from escaping into space.
The rate of acceleration of the crate would be 1 m/s^2 because the equation for force is F=ma and when you plug in your numbers you get 10=10a so a=1
Answer:
an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
Explanation:
Look it up on google
Answer:
Distance: 75 km
Displacement: 45 km
Explanation:
- Distance is a scalar quantity that refers to the total space covered by an object. It is calculated as the sum of the distances covered in each motion, regardless of their direction. therefore in this case:
distance = 60 km + 15 km = 75 km
- Displacement is a vector quantity whose magnitude is equal to the difference between the final point and the starting point of the motion, so it also takes into account the direction of each motion. In this case, the truck moves 60 km east, and then 15 km west: if we call '0' the starting point, the final point will be then
![p_B = 60 km - 15 km=45 km](https://tex.z-dn.net/?f=p_B%20%3D%2060%20km%20-%2015%20km%3D45%20km)
And so the displacement is
![d=p_B - p_A=45 km - 0 = 45 km](https://tex.z-dn.net/?f=d%3Dp_B%20-%20p_A%3D45%20km%20-%200%20%3D%2045%20km)