if an object is thrown straight up in the air at 100 meters a second, would it hit the ground at 100 meter?

Answer 1

Assuming you meant to say "100 meters per second",
yes, the object would.

After the object is released it undergoes a fairly constant acceleration downward as its Kinetic Energy is converted into gravitational Potential Energy. After the object reaches its highest point and begins to fall back down again (assuming no air resistance), all of the PE it gained on the way up is converted back into KE so when it gets back its original starting height, it has the same speed as when it left.
The law of conservation of energy at work.

Answer 2

of course yes
becouse when u through that object in air with initial velocity 100 m/s, this velocity will decrease & decrease as the object go upward Then when the velocity reaches 0 m/s (in the air) the object will instantanously stop, then it falls back with increase in velocity till it hits the same point it thrown from (ground) at the same velocity it thrown with (100 m/s)

i hope u got ur point from my explanation

Answer 3

if u neglect air resistance and take only gravitational pull of earth into account the body will hit the earth at 100 m/sec.but if u take the air resistance into account the process will be a bit complicated.while going up both the gravity n the air resistance wld slow the body but while coming down only the air resistance wld retard its velocity.so u will see tht body takes lesser time to go up while it takes a longer time to reach the velocity of 100 m/s again in its path of returning so we find tht as the distance covered in both the paths are same therefor the body wldnt reach the velocity of 100 m/s wen it hits thr ground

Answer 4

When we throw up a body with some velocity it is said to have kinetic energy.

When it goes up its velocity is reduced; hence its kinetic energy is reduced; at one stage its velocity becomes zero. That is its kinetic energy becomes zero.

But we know energy is conserved. Therefore, we can see that as the body goes up and up its potential energy increases by the amount it has lost its kinetic energy.

After the body has reached its highest point (its kinetic energy or velocity is zero), it returns to ground with increasing velocity, its kinetic energy increases, potential energy decreases; it looses all its potential energy when it reaches the same point where from it was thrown up. As there is no loss of energy the body has the same speed (but in the opposite direction with which it was thrown up.

But in practice the body is resisted by air and hence some of its energy is lost as heat energy during its path.

The speed is reduced in proportion to this loss of energy.

Answer 5

No, there's a limit to how fast something can fall i can't remember what it is. It's something like 8 meters per second.

Answer 6

Mmm... No, not nescessarily..

Falling objects reach a point called terminal velocity....that's how fast gravity pull them back to earth.

When you throw it, your energy transferred to propell the object overcomes gravity, but falling on its own, it will reach a terminal speed.

Answer 7

yes - ignoring air resistance (which would slow it down) and assuming that ball from thrown from the ground level (and not above it, which would speed it up)

Answer 8

yes

Answer 9

No, it hits your head !!
There is no horizontal velocity.

Answer 10

yes.