science physics

# What force is needed to maintain the speed of an object if there is no resistance?

Last Updated: 1st March, 2020

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If there is no resistance then no force isneeded to maintain the speed of an object. According toNewton's first law, a body in motion stays in motion and a body atrest stays at rest until and unless acted upon by some externalforce.

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Also to know is, what force is needed to stop an object?

The larger the velocity of a moving object thegreater the force required to stop it in a given timeinterval. Fig. 1. The force to stop a vehicle dependson its momentum. An external non-zero net force acting on anobject is equal to the rate of change of momentum of theobject.

One may also ask, what forces are acting on an object at rest? An object at rest stays at rest and anobject in motion stays in motion with the same speed and inthe same direction unless acted upon by an unbalancedforce.

Just so, what can you say about the speed of a moving object if no force is acting on to it?

The speed, or actually the velocity, of amoving object, if no force is acting on it,will be in a straight line with a constant speed(no acceleration), as required by the First of Newton'slaws. The speed of a object if no force is noforce acting on it then object is not stop anddo not change speed in obtect.

Which force acts upon a motion to stop it or slow it down?

Friction is an external force that actsopposite to the direction of motion (see Figure 4.3). Thinkof friction as a resistance to motion that slows thingsdown. Consider an air hockey table. When the air is turnedoff, the puck slides only a short distance before friction slows itto a stop.

Related Question Answers

Professional

## Why force is needed?

Force is a push or pull acting on an object whichtends to change The state of rest or motion of an object. Effectsof force: Friction force opposes the RELATIVE motionof object on the surface. Friction provides the necessarygrip to hold the objects, to move the objects, to stop the motionof object.

Professional

## Can stop a moving object?

The action from a force can cause an object tomove or speed up (accelerate), to slow down(decelerate), to stop, or to change direction. Sinceany change in velocity is considered acceleration, it can besaid that a force on an object results in the accelerationof an object.

Professional

## Is force needed to move an object?

Force is the "push" or "pull" exerted on anobject to make it move or accelerate. Newton's secondlaw of motion describes how force is related to mass andacceleration, and this relationship is used to calculateforce. In general, the greater the mass of theobject, the greater the force needed to move thatobject.

Explainer

## Do forces always result in motion?

A: Forces applied to an object do not alwaysresult in motion. Forces like friction act against anyforces of motion. Therefore, if a force thatis trying to create motion is less than the resistantforces, like friction, the object will notmove.

Explainer

## What force is used to stop a car?

Friction. The wheels are one system, the brakes areanother. Relative motion between the wheels and the brakes is whatcauses friction, and this reduces the angular speed of the wheels.A reduction in the angular speed of the wheels requires thecar to slow down too, assuming the wheels don'tslip.

Explainer

## Is a force always needed to slow down an object?

Yes, a moving object which has no forcesacting on it will always continue to move in the samedirection at the same speed until a force is applied.Sometimes it may not be so obvious what force is causing anobject to slow down. For example, a snooker balloften seems to slow down and come to a stop all on itsown.

Pundit

## What is the formula for acceleration?

Define the equation for averageacceleration.
To do this you need to know equation foracceleration: a = Δv / Δt where a isacceleration, Δv is the change in velocity, andΔt is the amount of time it took for that change to occur.The unit for acceleration is meters per second per second orm/s2.

Pundit

## How do you calculate impact force?

Impact From a Falling Object
The first step is to set the equations forgravitational potential energy and work equal to each other andsolve for force. W = PE is F × d = m × g ×h, so F = (m × g × h) ÷ d. The second and finalstep is to plug the values from the problem into theequation for force.

Pundit

## Is force a vector?

A force is a vector quantity. As learnedin an earlier unit, a vector quantity is a quantity that hasboth magnitude and direction. To fully describe the forceacting upon an object, you must describe both the magnitude (sizeor numerical value) and the direction.

Pundit

## What are the types of forces?

Basically, there are two types of forces, contactforces, and non-contact forces. Gravitationalforce, electric force, magnetic force, nuclearforce, frictional force are some examples offorce. We learn in detail about kinds offorce……

Pundit

## How do you find the net force?

The magnitude of the net force acting on anobject is equal to the mass of the object multiplied by theacceleration of the object as shown in the formula below. If thenet force acting on an object is zero, then the object isnot accelerating and is in a state that we callequilibrium.

Teacher

## What causes acceleration?

In the simplest case, a force applied to an object atrest causes it to accelerate in the direction of the force.For a massive body moving in an inertial reference frame withoutany other forces such as friction acting on it, a certain impulsewill cause a certain change in its velocity.

Teacher

## How does mass affect speed?

Mass doesn't affect speed directly. Itdetermines how quickly an object can change speed(accelerate) under the action of a given force. Lighter objectsneed less time to change speed by a given amount under agiven force.

Teacher

## What is the SI unit for force?

The Newton is the SI unit of force.Strictly defined: the force that will give a mass of 1kilogram an acceleration of 1 meter per second persecond.

Teacher

## What is a balanced force?

Balance forces are two forces acting inopposite directions on an object, and equal in size. Anytime thereis a balanced force on an object, the object stays still orcontinues moving continues to move at the same speed and in thesame direction.

Reviewer

## What is the relationship between force and acceleration?

Newton's second law of motion describes therelationship between force and acceleration. They aredirectly proportional. If you increase the force applied toan object, the acceleration of that object increases by thesame factor. In short, force equals mass timesacceleration.

Reviewer

## Is weight a force?

The weight of an object is defined as theforce of gravity on the object and may be calculated as themass times the acceleration of gravity, w = mg. Since theweight is a force, its SI unit is thenewton.

Reviewer

## What is an example of an unbalanced force?

Any two forces acting on each other, which arenot equal and opposite ( thereby causing motion ) are unbalancedforces. For example, when you push a wall with aforce, neither you nor the wall moves. The wall applies anequal amount of force in the opposite direction. This is anexample of balanced force.

Reviewer

## What are the effects of force acting on an object?

Effects of Force. A force acting on anobject causes the object to change its shape or size, tostart moving, to stop moving, to accelerate or decelerate. Whenthere's the interaction between two objects they exert aforce on each other, these exerted forces are equalin size but opposite in direction.

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