_____ _____hello mate_______
here are five harmful effects of friction
1) It makes us use more fuel
2) The gears in your care will wear down if not lubricated with oil
3) The friction up the device so, due to heating machine can damaged
4) Causes the production of heat between surfaces when the object move
eg : car brakes and tyres heat up due friction
5) Even our shoes wear out due to friction with the ground ; Friction with air causes air craft , meteors to heat
HOPE THE ANSWER WILL HELP U!!!! :-) :-) :-)
:-) :-)
Answer:
A planet's mass has no effect on its orbit around the Sun.
Explanation:
The kepler's third law tells us:
where 
is the orbit period and 
is the semi-major axis.
As we can see from the equation, the period depends only on the measure of the semi-major axis of the orbit, that is, how far a planet is from the sun.
The equation tells us that the closer a planet is to the sun, the faster it will go around it.
The mass does not appear in the equation to calculate the period.
This is why it is concluded from the third law of Kepler that<u> the period, or the orbit of a planet around the sun, does not depend on its mass.</u>
the answer i: A planet's mass has no effect on its orbit around the Sun.
<span>This problem is solved by the equation of motion:
x = x0 + v0*t + 1/2*a*t^2,
Here x0 = 0, v0 = 40ft/sec and a = -5 ft/s^2, we need to solve for t:
v = v0 + a*t, solve how long does it take to stop: 0 = v0 + a*t --> a*t = -v0 --> t = -v0/a
-- > 40/5 = 8 seconds to stop.
In this time, the car travels x = 0 + 40*8 + 0.5*-5*8^2 ft ~ 160 ft.
Answer: The car travels 160 ft.</span>
Answer:
The child fell off and died.
Sorry don’t know this one
