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What is the relationship between the momentum of a rocket and its velocity during space travel?
The momentum of a rocket is directly proportional to its velocity during space travel. This means that as the rocket's velocity increases, its momentum also increases. Momentum is a measure of an object's motion, and in the case of a rocket, its momentum is determined by its mass and velocity. So, the faster a rocket travels in space, the greater its momentum will be.
Can you describe how velocity changes during free fall?
Yes I can! I shall now do so, ignoring the effects of air resistance: During free fall, the direction of motion doesn't change. But the speed increases, steadily and continuously. The amount by which the speed increases each second is called the "acceleration of gravity". On earth, the speed is 9.8 meters per second (32.2 ft per second) greater after each second of free fall.
Can you describe how velocity changes during free-fall?
Yes I can! I shall now do so, ignoring the effects of air resistance: During free fall, the direction of motion doesn't change. But the speed increases, steadily and continuously. The amount by which the speed increases each second is called the "acceleration of gravity". On earth, the speed is 9.8 meters per second (32.2 ft per second) greater after each second of free fall.
Which parameter of light doesnt change on reflection?
Frequency is the parameter of light which doesnt change on reflection because it is the ratio of velocity of light in medium and wavelength of the particle.Hence,when velocity increases wavelength also increases and when velocity decreases wavelength also decreases but its ratio always remains constant.
Acceleration is defined as a change in velocity over time if a runner increases velocity from 2 m s to 4 m s over a period of 20 seconds what is the acceleration?
Assuming that acceleration is constant during that time, just divide the change in speed by the time.
An object in free fall what happens until it reaches terminal velocity?
During free fall, an object accelerates at a constant rate due to gravity. As the object falls, air resistance increases, causing the acceleration to decrease. Eventually, the object reaches terminal velocity, where the air resistance equals the gravitational force, resulting in a constant velocity.
The velocity of a body was noted to be constant during five minutes of its motion What was its acceleration during this interval?
The acceleration of the body was zero during this interval because its velocity was constant. Acceleration is the rate of change of velocity, so if the velocity does not change, the acceleration is zero.
What is an object doing during deceleration?
Its velocity is getting smaller.
Why velocity increases as you increase the area in kitchen taps during opening the tap?
Increasing the area of the tap opening allows more water to flow through, which results in an increase in the velocity of the water exiting the tap. This is due to the principle of conservation of mass, where the same volume of water must pass through the larger opening in a shorter time, leading to an increase in velocity.
What is the acceleration of the ball during any of these time intervals and at the moment the ball has zero velocity?
The acceleration of the ball is constant during any time interval where the velocity changes. At the moment the ball has zero velocity, the acceleration is the same as it was during the time interval when the velocity was changing. This can be calculated using the formula acceleration = change in velocity / change in time.
Is speed the main factor in accidents and why?
Speed is a significant factor in accidents as it reduces a driver's ability to react to unexpected situations and increases the severity of crashes. Excessive speed limits a driver's ability to maintain control of the vehicle and increases the likelihood of collisions. Speeding also reduces the effectiveness of safety features such as seat belts and airbags in protecting occupants during a crash.
What is its average velocity during this 15-s interval?
To find the average velocity during a 15-second interval, you would calculate the total displacement during that time and divide it by the total time. The formula for average velocity is displacement divided by time.
