Can a body have acceleration but no velocity ? If yes then example.?

Answer 1

yes.
when a body is thrown vertically upwards then at the highest point the velocity reverses.
for a fraction of a second the body has zero velocity but acceleration due to gravity keeps acting on it. then it starts coming down.
so a body thrown vertically up can have zero velocity but acceleration equalt to g.

Answer 2

No.

Acceleration is the change in velocity over time, if there is no change in velocity there is no acceleration.

You can have no acceleration but constant velocity, but not the other way round.

Consider it mathematically:

a = (v - u)/t,

where (v - u) is the change in velocity

If this is zero then acceleration would be zero hence the only solution to zero velocity is zero acceleration.

Response to other ideas:
A ball at the top of its flight when thrown upwards has no velocity, it is stationary and has no acceleration becauseof that. Think about it, acceleration is m/s2, meaning metres per second per second, if it hasn't moved any metres how can it be accelerating?

We are not experiencing an acceleration to the earth if we are standing on it because this requires a seperation distance (an r value if you look at the equation g = GM/r^2), furthermore there is no downward velocity because you aren't moving towards the earth, again zero velocity = zero acceleration.

We are accelerating due to centripetal force as the velocity is changing, not in speed, but in direction, hence a person on earth never experiences zero velocity as direction is constantly changing, hence how can you experience velocity without acceleration?

Answer 3

simple answer is YES,
anytime a body is moving in one direction and is accelerating in the opposite direction there will be a point in time at which the body has no velocity but is still accelerating. As a ball thrown vertically, or a ball attached to an elastic band. All of your NO answers need to get tossed right out. CLEARLY, they've no idea about what they are talking.

Answer 4

Let's give an example. Suppose an object's velocity can be described by the equation:

v = 6t^2 - 6

At time t = 1, the velocity is 0. Now, let's find the acceleration equation (take the derivative):

a = v' = 12t

At time t = 1, the acceleration is 12. Here is an example of zero velocity and non-zero acceleration.

Answer 5

acceleration is possible without velocity. an object when thrown vertically upwards attains a point(for an instant of time) where the velocity is 0 and the acceleration due to gravity acts on it. therefore at that instant it has 0 velocity and acceleration of 9.8 m/s sq.

Answer 6

Yes, at the earth's surface, we still have an acceleration of nearly 10 m/sec/sec acting on us but we don't move towards the centre of earth because the surface provides enough resistance.

When we try push a stationary car, we apply a force F which produces an acceleration a given by F/m where m is the mass of the car. But if this force is less than the static friction, the car will not move.

Answer 7

Yes

At this moment we are all experiencing the acceleration due to gravity of about 9.81 metres per sec ^2. This is an acceleration, but we are not falling. Yes is clearly the answer - see some other examples quoted above for other ideas.

Answer 8

In circular motion the body is having acceleration (because of the change in direction), but there is no velocity( this is also because of the change in direction)

Answer 9

all acceleration is is a change in motion. Not necessarily an increase in velocity. For example, a car going the same speed around a corner as it was going in a straight line is accelerating, because its motion is going from a straight line to a curve.

Answer 10

i anticipate your instructor is speaking approximately frequent relativity, the place the acceleration and gravity are the comparable, so merely in case you think approximately that being on the face of the earth is decrease than acceleration equals to 9.eighty one, then you definately obtain it. think of a physique, possibly a commute, flying up with an acceleration equals to 9.eighty one, the sum of the two accelerations would be 0, so the physique particularly to the universe would be status nevertheless, notwithstanding all of us agree right here in the international that the commute is dashing up.