Answer:C
Explanation:
I think its c im pretty sure
<span>1.0344645 MJ
The minimum energy need is the potential energy of the car at the top of the ramp and is given by
mass*gravity*height
mass is known, gravity is assumed to be 9.81m/s^2 as it is on earth, and height must be calculated using trigonometry.
height=sin(9 degrees)*710m=111meters
so
potential energy = 950kg*111m*9.81m/s^2=1.0344645 MJ
Using the law of the conservation of energy we can assume that the energy expended to push the car up the incline was at least the potential energy gained by moving 111m against the pull of gravity.</span>
Answer:
How much of your body is made of fat and muscle.
Explanation:
In physical fitness, body composition is used to describe the percentages of fat, bone, water and muscle in human bodies. Because muscular tissue takes up less space in the body than fat tissue, body composition, as well as weight, determines leanness.
Answer:
a few hundred thousand years after the Big Bang
Explanation:
Answer:
'acceleration will increase.'
Explanation:
We know that force on the rocket is given as follows
m=mass
v=velocity
t=time
F=force
F= m a
a=acceleration
If the mass m decreases then the acceleration of the rocket will increase.
Therefore we can say that if the mass m decreases then the acceleration a will increases to maintain the constant force F.
The answer will be 'acceleration will increase.'
