Acceleration of an object can be zero when it is moving with a constant velocity. Since velocity is constant, there will be no change in velocity and so there will be no acceleration.
Can a body have 0 acceleration?
If the body moves with constant speed without changing the direction, the acceleration of the body is zero. ie, for constant velocity and no change in direction = no acceleration. Yes , the body have acceleration with zero velocity.
If there is zero acceleration, that means there is no net force on the object, or .
Can a body have mass but no weight?
Yes, a body can have a mass but no weight. This is because the weight of the body varies from place to place with the value of acceleration due to gravity.
Yes. A body thrown vertically upwards has-zero velocity at its highest point. But at the highest point it has an acceleration equal to acceleration due to gravity.
Why is the acceleration zero?
At one moment, we’re not moving, and a small time later we’re still not moving, so there has not been a change in speed. Therefore, the acceleration has to be zero.
Can a body have zero velocity and finite acceleration explain?
Yes, it is possible when an object is thrown upward then at the highest point its velocity is zero and it has acceleration due to gravity, which is finite. Was this answer helpful?
When the acceleration of a body is zero then its velocity?
Since velocity is zero acceleration is also zero. Was this answer helpful?
Can a body has 0 mass?
Whereas on the other hand mass cannot be zero because mass is an intrinsic property and hence it depends upon the object alone and not on other factors. Thus mass of a body cannot be zero.
Can a body have zero mass and zero weight Name two types of mass?
It is not possible for a body to have zero mass ( no body can exist without mass ) but a body can have zero weight….. Weight = Mass × Gravitational acceleration. At the center of the earth the gravitational acceleration is 0 so multiply 0 with mass and any no. multiplied with 0 is 0 so weight can be 0.
Is it possible for a body to have mass but zero weight give an example?
Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. Yes, mass of a body os constant wherever it is taken. But weight of body, W=mg. The weight will be zero where g=0 e.g. At the centre of earth.
What is an example of zero acceleration?
So, a jet moving with a constant velocity at 800 miles per hour along a straight line has zero acceleration, even though the jet is moving really fast, since the velocity isn’t changing. When the jet lands and quickly comes to a stop, it will have acceleration since it’s slowing down.
How do you know if acceleration is zero?
If acceleration is zero, then initial velocity equals average velocity ( v 0 = v ” ) ( v 0 = v ” ) , and.
Can the acceleration be negative?
According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration.
Can a body have zero velocity and non-zero acceleration justify with example?
A body may have zero velocity but non-zero acceleration. For example, when a body is thrown vertically upwards at the maximum height the body momentarily comes to rest. At this point the body attains zero ation due to gravity directed downward.
Can a body with zero velocity have kinetic energy?
A body with zero velocity cannot have any kinetic energy.
Can a body have constant velocity but varying speed?
No, a body can not have its velocity constant, while its speed varies. Rather, it can have its speed constant and its velocity varying.
In which case is the acceleration of a body zero?
If the body has uniform velocity, it means velocity is not changing. So the change in velocity is zero. In other words, its acceleration is zero.
Can mass be zero or weight?
Mass can never be zero. Weight can be zero if no gravity acts upon an object, as in space.
Is Newton a weight?
Weight is the name given to the force caused by the Earth’s mass attracting an object’s mass. Weight is measured in newtons (N).
What is the weight of a body of mass 5 kg?
W = (5) (9.8) = 50 N. Assumption : Value of acceleration due to gravity = 9.8 m/s2.
Why mass Cannot be zero when weight is zero?
Answer. weight of the body is actually the gravitational force acting on it and mass of a body is the no. of particles present in it. therefore weight can be zero but mass can never be zero.
Is mass of an object always zero?
Mass can’t be zero because it is just quantity of matter in the body.
Why is the weight of a body zero at the Centre of the earth?
From the equation, (2), it can be inferred that the weight of the body is directly proportional to acceleration due to gravity and mass. Thus, weight is zero where the acceleration due to gravity is zero. Hence, the weight of the body placed at the center of the earth is zero.
How will you describe the weightlessness in space?
The sensation of weightlessness, or zero gravity, happens when the effects of gravity are not felt. Technically speaking, gravity does exist everywhere in the universe because it is defined as the force that attracts two bodies to each other. But astronauts in space usually do not feel its effects.
What is difference between g and g?
Can a body at rest have acceleration?
If a moving body comes to rest, then its acceleration is negative, as it’s velocity becomes zero. therefore the acceleration is also zero.
Which is an example of negative acceleration?
Negative acceleration is also termed as retardation. Some examples of negative acceleration from our daily lives are: (1) If we throw a ball with some initial velocity towards the sky, then the body goes up and attains a particular height and there it stops for a while and then comes back to the earth.
Can deceleration be positive?
The car is also decelerating: the direction of its acceleration is opposite to its direction of motion. (c) This car is moving toward the left, but slowing down over time. Therefore, its acceleration is positive in our coordinate system because it is toward the right.
How do you know if acceleration is negative?
An object which moves in the positive direction has a positive velocity. If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion (in this case, a negative acceleration).
Is gravity an acceleration?
Gravity is already an acceleration in classical mechanics. You are, after all, probably used to expressing the gravitational field on Earth’s surface by assigning the gravitational acceleration g=9.81m/s2.
Can a body have zero velocity but still be accelerating give a suitable example?
Yes, a body with a velocity 0 can still accelerate. The simplest example is a body which is thrown up. At the peak point its velocity becomes 0 but still accelerates due to gravity.
Can a body have zero velocity and still be accelerating example?
Yes when a body is projected upwards at a highest point its velocity is zero but the acceleration is equal to g the acceleration due the gravity.
Can energy of a body be zero?
This work remains stored in the body as potential energy. While coming back to its original position the body can do work, so potential energy of the body decreases and becomes zero when it reaches to its standard position.
What is kinetic energy of a body when the body having initial velocity zero?
So when at the top of the throw velocity, v, is equal to zero. We know kinetic energy, KE, is 1/2mv^2 so when v = 0, KE = 0.
Which of the following is true a body with zero velocity Cannot have any potential energy?
A body with zero velocity cannot have any kinetic energy. If two objects of different mass have the same non-zero momentum, A. the one with less mass will have the greater kinetic energy.
Can a body have a velocity east and acceleration East?
Thus, all situations possible. A) an object has velocity directed east and acceleration directed east Possible: car moving east hits the accelerator.
How fast is gravity on Earth?
The Earth’s average is 9.80 m/s2 (32 ft/s2) which is generally reported as the acceleration of gravity on Earth. This means a dropped object will speed up 32ft/s every second it falls assuming no air resistance.
Why do we feel lighter in Moon?
Mass of the moon is less than the Earth, therefore, the force of attraction is less. Mass of the moon is more than the Earth, therefore, the force of attraction is more.
How many newtons is a punch?
The higher the Newton (N) the greater the force or harder the punch. Punching forces in amateur boxing are around 2500 N. If you weigh 70 kg (11 stone or 154 lbs), you’ll exert about 700 N of force on the ground just stood still. That makes punching force about 3.5 times body mass.
Can mass be in newton?
A newton is defined as 1 kg…m/s2 (it is a derived unit which is defined in terms of the SI base units). One newton is therefore the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force.
How many newtons does a bullet have?
The average force exerted on the bullet is 304 Newtons.
How much would a 70kg man weigh on the moon?
Thus the man would weigh 114.1 newtons on the moon. Please note that the mass of a body is constant everywhere in the universe.
What is the acceleration of a body with uniform velocity?
If a body is moving with uniform velocity in a given direction its acceleration will be zero.
How much would a 70 kg man weigh on the moon what would be his mass on the earth and on the moon?
The weight of the man on the moon will be 119 N The mass will remain same (70 kg) on earth and the moon.