is moves with a constant velocity in the positive direction......
When velocity is negative, it means that the object is moving in the opposite direction of its positive velocity.
The formula for positive acceleration is: acceleration = change in velocity / time taken. Positive acceleration means an increase in velocity over time.
For a car's speed to increase and have a positive acceleration, the car's velocity needs to be increasing in the same direction as its acceleration. This means that the car is speeding up. When the velocity and acceleration have the same sign (both positive or both negative), the car's speed will increase.
The rate at which velocity changes is called acceleration. It describes how quickly an object's velocity is changing with respect to time. Positive acceleration means the object is speeding up, negative acceleration means it is slowing down, and zero acceleration means the velocity is constant.
In this case, acceleration is positive. Negative acceleration would cause the object to slow down (decelerate.)
When velocity is negative, it means that the object is moving in the opposite direction of its positive velocity.
The formula for positive acceleration is: acceleration = change in velocity / time taken. Positive acceleration means an increase in velocity over time.
For a car's speed to increase and have a positive acceleration, the car's velocity needs to be increasing in the same direction as its acceleration. This means that the car is speeding up. When the velocity and acceleration have the same sign (both positive or both negative), the car's speed will increase.
They are not alike but they are related. A positive acceleration means an increase in velocity (speed). A negative acceleration means a decrease in velocity. Velocity (speed) has the dimensions of distance / time. Acceleration has the dimensions of distance/time2 or velocity/time.
The rate at which velocity changes is called acceleration. It describes how quickly an object's velocity is changing with respect to time. Positive acceleration means the object is speeding up, negative acceleration means it is slowing down, and zero acceleration means the velocity is constant.
It depends on what information you have. Also, velocity can be negative - it just means that the object is travelling in the direction opposite to the positive direction for the velocity vector.
In this case, acceleration is positive. Negative acceleration would cause the object to slow down (decelerate.)
Velocity can be a positive or a negative because velocity is a vector, which means it is also affected by direction. This that if one car is going +10 m/s and another is travelling at -10 m/s, this means that they are travelling the same speed in opposite directions.
Concave up. "Acceleration is increasing with time" tells us that the derivative of acceleration is positive. Since acceleration is the derivative of velocity, this means that the second derivative of velocity is positive. By definition, having a non-negative second derivative means that velocity is concave up.
The rate of change of velocity is known as acceleration. It measures how quickly an object's velocity is changing over time. Positive acceleration means the object is speeding up, negative acceleration means it is slowing down, and zero acceleration means the velocity is constant.
Positive velocity can be in any direction as long as the object is moving in that direction. For example, a car moving northward has a positive velocity in the north direction.
Positive acceleration means that an object's velocity is increasing over time. This can happen when an object is speeding up in the direction of its motion.