9,000/12=750
Speed is equal to distance divided by time
Answer:

Explanation:
From the question we are told that:
Mass of cart A 
Mass of cart B 
Speed of cart AA
Generally the equation for velocity of A after collision
is mathematically given by




Answer:
Height, H = 25.04 meters
Explanation:
Initially the ball is at rest, u = 0
Time taken to fall to the ground, t = 2.261 s
Let H is the height from which the ball is released. It can be calculated using the second equation of motion as :

Here, a = g
H = 25.04 meters
So, the ball is released form a height of 25.04 meters. Hence, this is the required solution.
If an object is at equilibrium, the net force acting upon the object is 0 Newton.
Answer:
The area is 15.502 km².
The fraction is 
Explanation:
Given that,
Daily average insolation = 6 kWh/m²
Efficiency = 20%
Population = 324 million
Per capita power = 1378 watts
Area of tennessee = 109250 km²
We need to calculate the daily power required
Using given data

Put the value into the formula



We need to calculate the total energy per day
Using given data


We need to calculate the out of total energy
Using energy and efficiency



We need to calculate the area
Using formula of area

Put the value into the formula


We need to calculate the fraction of Tennessee that is required to power
Using given data

Put the value into the formula


Hence, The area is 15.502 km².
The fraction is 