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...he exerts against the ground

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โˆ™ 2010-06-07 20:00:52
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Q: A boy on a skateboard pushes off the ground with his foot He and the skateboard accelerate down the sidewalk due to the force?
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Why does a person move forward when he or she pushes on the sidewalk?

The person's feet push backward on the sidewalk; the sidewalk pushes forward on the person.


Which explanation describes the forces involved for a person to walk down the sidewalk?

The person's feet push backward on the sidewalk; the sidewalk pushes forward on the person.


Suppose that you fall on a sidewalk while rollerblading Do you exert a force on the sidewalk Does the sidewalk exert a force on you Which of these forces may injure you?

Both, you exert a force onto the sidewalk, and the sidewalk "pushes back" with an equal, but opposite force.


How does firing gas from a rocket backward accelerate the rocket forward?

Well, according to Newton's third law of motion, for every action there is an equal and opposite reaction, so when the gas pushes against the ground, the ground "pushes" back, forcing the rocket upwards.


If more force acts on an object will the object accelerate?

Well not necessarily because if force pushes it down it cannot accelerate anymore but in other directions it will accelerate.


How does man walk?

When we walk on the ground our foot pushes the ground backward, and in return, the ground pushes our foot forward. The forward reaction exerted by the ground pushes our foot forward. The forward reaction exerted by the ground on our foot makes us walk forward.


Example of 3 laws of motion?

when we walk on the ground, our feet pushes the ground in backward direction, as a reaction ground pushes us in forward direction hence we can walk on the ground.


John pushes his bike along the sidewalk at a constant speed if he increase the force on the bike what happens?

The bike accelerates


What is an example of newton third law?

-- When you push on a brick wall with a force of 50 pounds, the brick wall pushes back on you with a force of 50 pounds. That way, the forces on the palm of your hand are balanced, and your hand doesn't accelerate. -- When you stand on the ground with a force of 185 pounds, the ground pushes back on the bottom of your shoes with a force of 185 pounds. That way, the forces on the soles of your shoes are balanced, and your feet don't accelerate.


When you walk along the sidewalk you push the earth and the earth pushes you How come no one notices that you pushed the earth?

When you push off, you accelerate away from the earth, and the earth accelerates away from you, but because of the earths great mass the acceleration and distance travelled are incredibly small and cant be discerned.


What force pulls liquids to the ground?

Gravity is actually a pushing factor and it pushes liquids to the ground.


If a kg swimmer pushes off a pool wall with a force of 250 N at what rate will the swimmer accelerate from the wall?

56


How do rockets work relatively to newtons first law?

the rocket pushes on the ground and the force of the fuel igniting pushes the rocket up


How does a water rocket work?

The compressed air inside the bottle pushes the water out of the nozzle and it water then gives the thrust to accelerate the rocket.


How does gravity keep us on the ground?

Space pushes down on us


If a 70 kg swimmer pushes off a pool wall with a force of 250 N at what rate will the swimmer accelerate from the wall?

56


What takes place when a spacecraft is launched?

The energy from the fuel pushes against the ground, which (because every action has an equal and opposite reaction) pushes the rocket up.


Why it is hard to run on ice?

you can walk on the ground because of Newton's third law! One foot exerts a force on the ground in a backward direction (try walking away from a skateboard...) and the reaction force from the ground on you is what pushes you forward. On ice there is much less friction to be able to push backward, hence there will be much less reaction force pushing you forward. That's the physics of it, Newton's third law!


A rocket lifts off by pushing down on the ground which then pushes the rocket up?

The propellant


How do crabs keep their internal conditions stable?

they have weight that pushes the ground and they have to use balance


Why friction is important to running?

you need friction so the ground can push on your foot while your foot pushes on the ground. that is the only way you can move.


How does the magma get above ground?

High pressures in the Earthโ€™s crust pushes magma up cracks in the tectonic plates until it emerges above ground level.


Pools about groundwater?

This question makes no sence!!! If you have groundwater and want to build an inground pool you need to install a "well point". a Well point is a plumbing line which runs underground and pumps out "ground water" under the pool. Once the pool is filled you do not need to worry about the ground water as much. the water in the pool pushes OUT as ground water pushes in.


What do you call the flower holder with a spike that pushes into the ground for a cemetery?

Believe it or not ,a spiked grave vase.I'm not kidding.


How can a bicycle seat exert a force?

If you sit on it, you push downward. The bicycle seat naturally pushes back up - if this wasn't the case, you would accelerate downward, due to the force of gravity.

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