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What Two car's both start from rest and have the same constant acceleration When radar is used to measure the velocity of each car car A is found to be moving twice as fast as car B At the instant?
Wiki User
∙ 13y ago
If two objects start from rest and have the same constant acceleration, their velocity and displacement from the starting point will always be the same. Acceleration is distance per time squared. It has nothing to do with the size or mass of the car.
Unless, of course, their initial directions were different. Then it is possible for their perceived velocity to be different.
Wiki User
∙ 13y ago
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The measure of how fast a velocity is changing at a specific instant is known as?
The rate of change of velocity is known as acceleration. This can come in different forms (linear / nonlinear acceleration, angular acceleration ect).
What does constant velocity or acceleration mean?
"Constant" means that regardless of when you measure it, the result is always the same. "Velocity" means speed and its direction. "Acceleration" means the rate at which speed is changing, and the direction in which it's changing.
How do you measure constant velocity?
Constant velocity is, well, constant. To measure it, measure the displacement through a given or fixed period of time. You'll have distance and time. Distance per unit time is speed. Distance per unit time (speed) with a direction vector is velocity. Velocity is speed in a given direction. If something is moving at constant velocity, it is moving at a constant speed in one direction. No changes in speed (no positive or negative acceleration, or, said another way, no acceleration at all), and no change in direction or heading.
Can object have zero acceleration and nonzero velocity at the same time and give examples?
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.
Mass is a measure of an objects resistance to?
To acceleration (change in velocity).
The measure of how fast a velocity is changing at a specific instant is known as?
The rate of change of velocity is known as acceleration. This can come in different forms (linear / nonlinear acceleration, angular acceleration ect).
What is constant acceleration?
constant acceleration is a measure of a continuing increase in velocity per unit of time. another way to express it is: d²x/dt² = c where c is a constant
What does constant velocity or acceleration mean?
"Constant" means that regardless of when you measure it, the result is always the same. "Velocity" means speed and its direction. "Acceleration" means the rate at which speed is changing, and the direction in which it's changing.
How do you measure constant velocity?
Constant velocity is, well, constant. To measure it, measure the displacement through a given or fixed period of time. You'll have distance and time. Distance per unit time is speed. Distance per unit time (speed) with a direction vector is velocity. Velocity is speed in a given direction. If something is moving at constant velocity, it is moving at a constant speed in one direction. No changes in speed (no positive or negative acceleration, or, said another way, no acceleration at all), and no change in direction or heading.
Why do you had to calculate acceleration with velocity?
Because acceleration is the rate of change of velocity: it is a measure of how quickly velocity is changing.
Can an object moving at a constant speed have acceleration?
Acceleration is defined as the change in velocity over a given time period. Velocity is a vector quantity: it includes speed and direction. That being said, you can accelerate an object without changing its speed by simply changing its direction. A body moving along the circumference of a circle its speed may remain a constant, but its velocity will not be a constant since its direction of motion continuously changes, since the velocity changes it has an acceleration.
What does a tangent to a velocity-time graph measure?
It will measure acceleration in the direction towards or away from the origin.
How does constant velocity differ from constant acceleration?
Constant velocity is a measure of distance traveled per unit of time at a uniform speed, such as miles per hour or feet per second. Constant acceleration is a measure of a continuing increase in velocity per unit of time, as when a car speeds up from 30 miles per hour to 40 miles per hour in 5 seconds, then from 40 miles per hour to 50 miles per hour during the next 5 seconds. It will then have had a constant acceleration of 10 miles per hour per 5 seconds.
How many g's is the speed of light?
speed of light is constant velocity and does not accelerate so there is no g force
Acceleration is a measure of?
the rate of change of velocity.
What does acceleration divided by time measure?
Velocity
Can object have zero acceleration and nonzero velocity at the same time and give examples?
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.
