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What force is necessary to accelerate a 70 kg object at rate of 4.2 m s?
Wiki User
∙ 12y ago
Force (in newtons) is equal to the mass of the object (in kilograms) multiplied by the acceleration of the object (in meters per second per second).
F = ma
F = 0.04 x 20
F = 0.8 newtons
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoI'm assuming you mean 4.2 m/s^2, as m/s is a measure of velocity
F=m*a
F=70kg*4.2m/s^2
F=294N
Wiki User
∙ 11y agoForce equals the mass in kg times the acceleration in m/s2. F = ma = 0.40kg x 20.0m/s2 = 0.8N
Wiki User
∙ 9y agoForce equals mass times acceleration. Therefore, a force of 80 newtons is required.
Wiki User
∙ 14y agoF=m*a, so F=30*4=120 Newtons
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What are Velocity and Force?
Velocity: the rate of change of position. Force:what causes a mass to accelerate 7 types of force:strong, electromagnetic,weak, and gravitational
Why do objects fall at the same rate of acceleration?
There are several ways to look at this; for example:1) If you have an object of 1 kg, it will accelerate at a certain rate. Two separate objects of 1 kg each will also accelerate at the same rate. Now, if you join them, there is no reason why they should suddenly accelerate faster, or slower, just because they are together.2) For an object of 2 kg, there is twice the force acting on it, to pull it down. However, this is compensated by the fact that the object also has twice the inertia, so it takes twice the force to give it a certain acceleration.Earth's gravitational field, near the surface, is about 9.8 meters/second2. This is the same as 9.8 newton/kilograms; that is, each kilogram is subjected to a force of 9.8 newtons.
What effect does an object's mass have on forces applied to the object?
I'm not sure what you mean by 'force is needed'. Needed to do what? The Newton is defined as the force required to accelerate a mass of 1 kg at a rate of 1 m/sec2. Clearly if you double the mass and keep the acceleration the same, the force required is also doubled.
What does Newton SI unit of force mean?
1 Newton is the amount of force necessary to accelerate a 1 kg mass at an acceleration rate of 1 meter per second2 Since the acceleration due to Earth's gravitational pull is 9.8 m/s2, a 1 kg mass will exert a 9.8 Newton force against a surface that it is resting on.
Is power of the object moving with constant force and velocity can be meaured?
Please slow down. A few points need to be clarified here: -- There's no such thing as "moving with constant force". -- If the object exerts a force on something else, or a constant force acts on the object, then the object can't move with constant velocity. It must accelerate. -- A moving object has energy, but it doesn't have 'power'. Power is the rate at which energy is moving, or changing, or being used. If the object is moving with constant velocity, then its energy is not changing. -- If its energy is changing, then its velocity, or position, or temperature is changing. Either the object is transferring energy to something else (like brakes), or something else is transferring energy to the object (like an engine). Either way, the rate at which power is exchanging between the object and something else is the power. But there's no such thing as "power of the object". Now, what was it you were saying ? The energy of the object can be calculated, if we either know or measure its mass, electric charge, altitude, speed, temperature, etc.
What force is necessary to accelerate a 70-kg object at a rate of 4.2 ms?
Force = mass x acceleration = 70 x 4.2 = 294 Newtons
The force that is needed to move somethimg is proportional to what?
The force needed to accelerate an object at some rate is proportional to the object's mass.The object may be moved by as small a force as you want. It just won't accelerate at a very high rate.
How is the rate of motion of an object affected by an increase in force applied?
An increase in applied force will cause the object to accelerate.
What force is necessary to accelerate a 70 kilogram object at a rate of 4.2 m's?
F=ma, so=70*4.2=294NAnd acceleration has units of ms-2
What force is necessary to accelerate a 70 kg object at a rate of 4.2 ms squared?
70 kg x4.2 m/s 140 +2800 294.0 m/s
What is the effect of force in an object?
Force in an object ... from the inside ... can increase its internal pressure, andperhaps cause the object to explode if the force becomes great enough, but itcan't change the object's motion.Force on an object ... from the outside ... causes the object to accelerate, in thedirection of the force, at the rate of(Magnitude of the external force) divided by (mass of the object).
Why do two objects with different mass will fall at the same time?
-- It takes more force to accelerate an object with more mass. ... Gravity exerts more force on an object with more mass. -- It takes less force to accelerate an object with less mass. ... Gravity exerts less force on an object with less mass. Whatever the mass of the object happens to be, gravity always exerts just the right amount of force to accelerate it at always the same rate ... 9.8 meters per second2.
What force is necessary to accelerate at 70kg object at a rate of 4.2 minutes per seconds?
Newton's 2nd law of motion states that F=ma Therefore, the force required is just the mass X the acceleration so 70 X 4.2 which equals a force of: 294 Newtons
What force is required to accelerate a 45 kg object at a rate of 5 ms2?
F = ma = 45 x 5 = 225 Newtons
What force is necessary to accelerate a 1250 kg car at a rate of 40 mss?
the force needed is 8.89m/s2 .
When an unbalanced force acts on an object what does the force do?
It causes it to accelerate, according to the equation, Force = mass * acceleration. Force should be thought of as the Rate of Change of Momentum of an object. Specifically F=dP/dt. Take the equation F= ma = mdV/dt = d(mV)/dt =dP/dt
If an object with a net force move?
I'm not entirely sure what the question is asking. I'll take a stab at it though. An object that has a non-zero net force applied to it will move. It will accelerate in the direction of the net force at a rate given by F / m, where F is the net force (N) and m is the mass of the object (kg).
