# Can an object have a northward velocity and a southward acceleration explain?

Yes it can.

imagine a space rocket taking off. gravity is a force and hence causes an acceleration to any body within its field. when a rocket takes off, its velocity is 'upward' but the acceleration due to gravity is downward.

so for any object being thrown vertically in the air, it has a 'northward' velocity and 'southward' acceleration'

### If an object has zero acceleration and does that mean its velocity is zero and Explain?

If an object has zero acceleration, its velocity doesn't have to be zero. Acceleration is a measure of the change in velocity over time. Zero acceleration means there is no change in velocity over time, namely constant velocity. Constant velocity can be any velocity (including zero velocity or "at rest"), so the object's velocity doesn't have to be zero to have zero acceleration.

### Explain why an object in a state of equilibrium could be either in motion or stationary?

Stating that an object is in a state of equilibrium means that it has no forces currently acting on it. An object without forces acting upon it has no acceleration or deceleration. This means that if it was already moving, it would continue moving in the same direction and at the same speed (i.e. it would have constant velocity). If it was not moving, it would continue not moving (i.e. it would be stationary).

### Can changing of velocity results in acceleration. Explain.?

Acceleration is change in velocity over time. a = vf - vi/Î”t, where a is acceleration, vf is final velocity, vi is initial velocity, and Î”t is the time interval. For example, a car accelerates from rest to 15m/s in 5.9s. What its acceleration? vi = 0m/s, vf = 27m/s, Î”t = 5.9s, a = ? a = 27m/s - 0m/s/5.9s = 4.6m/s/s = 4.6m/s2

### Can an object have a constant speed and the varying velocity at the same time explain?

Yes. In order for an object's velocity to be constant, its speed and direction of motion must both be constant. An object moving in a circle, for example, has varying velocity, even if its speed is constant. This situation is known as "uniform circular motion," and the acceleration in this case is called "centripetal [center-seeking] acceleration."

### Is it possible for a body to have an acceleration when moving with constant speed explain?

Yes, it's acceleration will be zero because the velocity isn't changing, but it has an acceleration. Think of it in terms of integration and derivation. Acceleration is the derivative of velocity, so if velocity is a constant number the acceleration must be zero. Generally if value of acceleration is "zero", we consider it to mean that there is NO acceleration. The question that was actually answered above was "Can acceleration be DEFINED fora body moving…

### Explain why an object cannot keep accelerating?

Sure it can. The Earth moving around the Sun, a pendulum moving back and forth, are examples of acceleration - the velocity keeps changing all the time. Sure it can. The Earth moving around the Sun, a pendulum moving back and forth, are examples of acceleration - the velocity keeps changing all the time. Sure it can. The Earth moving around the Sun, a pendulum moving back and forth, are examples of acceleration - the…

### Can an object have zero velocity and a negative acceleration?

Only instantaneously. If an object is being negatively accelerated, it will be slowing down. If the negative acceleration continues to act on the body, it may, at some point have zero velocity because it has come to a stop, but still have the force acting on it. In the next instant, the object will then be accelerated in another direction. This isn't a "trick" answer. It is just offered to explain a situation in mechanics…

### What is newtons 2nd law of motion in simple terms?

It isn't really simple to explain; to get a thorough understanding, you MUST understand a few basic concepts. See below. But basically, a force will result in an acceleration; the amount of acceleration an object experiences will depend on the force (more force will result in more acceleration), and on the object's mass (more mass will result in less acceleration). The basic concepts that are important to understand are the following: * Acceleration as a…

### Explain why the unit for velocity is ms but unit for acceleration is ms2?

That is because, basically, velocity and acceleration are not the same thing. Understanding the units for velocity should be quite clear. 5 m/s, for example, means that an object changes its position 5 meters, every second. Acceleration is a little more confusing. After all, "second squared" by itself doesn't have any physical meaning! The idea, however, is quite clear once you understand the following. Acceleration is a change in velocity, per time unit. Let's say…

### An ice skater glides around a rink at a constant speed of 2 ms is the skater acceleratng explain your answer?

The the skater is accelerating. Acceleration is the rate at which an object changes its velocity. Velocity is a measure of speed and vector (direction). Even though the skater is traveling at a constants speed, the skater is going in a circle around the rink so the direction is changing. Therefore the velocity is changing. Therefore the skater is accelerating.

### How do you apply newtons first and second laws to explain why an object moving in a circular path at a constant speed is undergoing acceleration and has a force exerted on it?

"Velocity" is defined as the description of the direction an object is moving and its speed in that direction. If either or both of those items is changing, then the velocity is changing. Any change in velocity is defined as "acceleration". -- An object with no force acting on it moves in a straight line. The only way to cause it to deviate from straight-line motion is with force. An object that's not moving…

### In throwing a ball upward discuss the velocity and acceleration when the ball reaches its maximum height?

If a ball, or any object, is thrown vertically it will always be accelerating downwards at a rate of 9.8 m/sec2 until it hits something. Because it starts with an upward velocity, this acceleration slows it down until it has zero. This is obviously the point of maximum height. After this it will start downwards always with the same acceleration. After a second from its maximum height, it will have a velocity of 9.8 m/sec…

### If a baseball has zero velocity at some instant is the acceleration of the baseball necessarily zero at that instant explain and give examples?

oh my... The acceleration is the first derivative of the speed / velocity. Mathematically the first derivative of a constant function is null. By the way, the acceleration is null regardless of the actual speed, provided this speed is not changing (null is a only special case of a constant). The notion of derivative is linked to the notion of values at limits, so when we say the speed is constant, actually we want to…