Answer:
<em>PE = Fd</em>
Explanation:
Potential energy is the energy possessed by a body by virtue of its position. It is expressed mathematically as:
PE = mgd
m is the mass
g is the acceleration due to gravity
d is the distance
Since Force F is expressed as the product of mass and acceleration due to gravity then, F = mg
Substitute into the formula above:
Recall that: PE = mgd
Since F = mg
PE = Fd
<em>Hence the required expression is PE = Fd</em>
Answer:
ionic
ionic
covalent
covalent (i think)
Explanation:
ionic= donate electrons (gain/lose)... (results in ions that have +/- charge, are no longer neutral)
covalent= share electrons
Answer:
Final speed of the rocket, v = 3780 m/s
Explanation:
It is given that,
Initial speed of the rocket, u = 0 (at rest)
Acceleration of the rocket, 
Time taken, t = 0.7 min = 42 s
We need to find the speed at the end of this time. It can be calculated using first equation of motion as :
v = 3780 m/s
So, the speed of the rocket at the end at the end of 0.7 minutes is 3780 m/s. Hence, this is the required solution.
Answer:
2560J
Explanation:
KE= 1/2mv^2 so plug in the numbers to get
KE= 1/2 (80)(8)^2
KE= 2560
