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If A car travels down the highway at 55 mph its speed is what and its acceleration is what?
Wiki User
∙ 14y ago
Acceleration is zero since 55 mph is velocity and it is constant. Acceleration is defined as the rate of change in velocity. The speed is the absolute value of velocity so it is also 55.
Wiki User
∙ 14y ago
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A car travels up a hill at a constant speed of 45 km perh and returns down the hill at a constant speed of 61 km per h Calculate the average speed?
53
What is the nature of distance time graph for the motion of an object moving with a changing speed?
An incline represents acceleration, a straight line represents a constant speed and a decline represents slowing down.
Does the average speed depend on the steepness of the inclined plane?
Assuming you are asking about an object that is placed on an inclined plane and the only forces acting on it are gravity and friction; as the slope of the plane increases, more of gravitational force is applied down the plane and less of the frictional force is applied to the object up the plane. Unless there is no frictional force, until the plane reaches a certain critical slope the gravitational force will not overcome the frictional force and the object will not move, and the average speed for the object will be zero regardless of the slope of the plane (below this critical slope). As the slope increases there is an increase in the net force on the object down the plane which results in a higher acceleration down the plane, and with a higher acceleration it will reach a higher speed and so the average speed of the object down the plane will be higher. So, yes, it can be said that the average speed of an object down an inclined plane is dependant on the slope of the plane. If there are other forces involved, for example a motor, then the average speed will depend on these forces as well as the slope.
Can velocity be 0 but speed not 0?
Speed and Velocity are two words that mean the same. You may mean, "Can Velocity be 0 but acceleration not 0". Yes, this occurs when a moving object is changing direction (say from moving forwards to moving backwards) or is just about to move or, at that very instant has just come to a halt. In all these cases, speed /velocity is zero but the body is accelerating. Don't forget, the word acceleration is also used when an object is decelerating (slowing down).
When the slope of v t graph is negative and constant what is the nature of acceleration?
acceleration is the slope of the v t graph... so the acceleration is constant and negative. In other words, the object is slowing down at a constant rate.
If your speed slows down you will have what acceleration?
If your speed slows down, yYou will have negative acceleration or deceleration.
What is the difference between speed and accelaration?
speed means - how fast your going . acceleration - is the change in speed. examples: I was going down the highway at 65mph (current speed). A corvette can accelerate from 30-70mph in 4 sec.
What is positive negative and zero acceleration is?
positive acceleration is when things speed up; negative acceleration is when things slow down; and zero acceleration is when things do not speed up or slow down, this is called constant speed, or no change in velocity.
How is slowing down acceleration?
because acceleration is speed over time
Does the distance a toy car travels down a ramp affect its speed?
yes This is because of the fact that gravity is a measure of acceleration. The longer the car has to accelerate the faster is will be by the end.
How can you increase or decrease acceleration?
acceleration is a change in speed or direction, so to answer your ? you slow down, speed up or make a turn :]
Do acceleration mean to speed up and slowing down?
it means to speed up
What is the acceleration of a car that is going at a steady speed of 60 mph?
At a constant speed there is no acceleration. Acceleration describes a positive change in speed meaning to go faster. Deacceleration describes how fast something is slowing down. But at a constant speed of 60mph there is acceleration or deacceleration.
What is meant by positive acceleration and negative acceleration?
Positive acceleration = speeding up; speed increasing in the direction you're moving.Negative acceleration = slowing down; speed decreasing in the direction you're moving,or speed increasing in the opposite direction.
How does the direction of acceleration affect the directions of motion?
The acceleration will either speed up or slow down an object's motion in the direction it is applied. Any change in speed or direction is considered acceleration.
What is changing speed?
Change in speed (more precisely change in velocity) is called acceleration.
If your speed changes from 10 kmh to 6 kmh you have a(n) acceleration. positive or negtive?
if your speed is in the positive direction you are slowing down and acceleration is the opposite direction and is negative acceleration.However if your speed is the negative direction ( like running backwards) and you slow down then acceleration is in the opposite direction and positive.In your case if speed is 10 kmh positive going to 6kmh then acceleration is negative
