Answer:
2560J
Explanation:
By definition the kinetic energy can be calculated in the following way:
K = (mv²)/2 = 80kg·(8.0m/s)²/2 = 2560 J
- m1=1500kg
- m_2=3000kg
- v_1=5m/s
- v_2=7m/s
Using law of conservation of momentum





Answer:
C) rift valley
Explanation:
A rift valley is a lowland region formed by the interaction of Earth's tectonic plates. This small rift valley has a typical formation—long, narrow, and deep. It was formed by the Thingvellir rift, where the North American and Eurasian tectonic plates are tearing, or rifting, apart over a hotspot on the island of Iceland.
1.could be anything... make sure there is safety nets below in case of an accident?
2. F1 car is more stable because the center of gravity is lower than the double deckers center of gravity
3. To find the mass of an object just put it on the scale, to find the volume put the object in a marked beaker to measure the water displacement which is the volume
Answer:
The value is 
The force will be outward
Explanation:
From the question we are told that
The diameter of the disk is 
The external pressure on Mars is
From the question we are told that
Internal pressure = External pressure
Generally the external Force on earth is

Here
is the atmospheric pressure with value 
So

=> 
=> 
Generally the external Force on Mars is


=> 
=>
Net force is mathematically represented as

=> 
=>
converting to pounds

=> 
Given that that the value is positive then the force will be outward