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Your vertical speed is zero when you're at the highest point of your jump. After that, it
begins to grow again, but in the downward direction. Your vertical speed is the same
when you hit the ground as it was when you left the ground, but in the opposite direction.
Your horizontal speed doesn't change. It's the same when you hit the ground as it was
when you left the ground, and in the same direction.
What else can I help you with?
When is the speed zero?
The speed is zero when an object is at rest or not moving. This can occur at any point during an object's motion when it changes direction or comes to a stop.
Which of the following is true at the point where you reach the top of your jump on a trampoline?
At the top of the jump, your speed is changing from upward to downward speed, so there's an instant there where your speed is zero. -- Potential energy is max, because your height is max. -- Kinetic energy is zero, because your speed is zero.
Can particle have zero speed and non zero velocity?
No, a particle cannot have zero speed and non-zero velocity simultaneously. Speed is the magnitude of velocity and if speed is zero, then velocity must also be zero.
Can an accelerating object have zero speed?
No, an accelerating object cannot have zero speed. Acceleration is the rate at which the speed of an object changes over time. If an object is accelerating, its speed is increasing or decreasing, but it cannot be zero.
Can an object be accelerating when it speed is zero?
Yes. There can be an instant during a period of acceleration when speed is zero. We can think of two examples right away: 1). Drop an object from your hand. As soon as you release it, downward acceleration begins immediately, but speed is zero. 2). Toss an object (like a baseball or a stone) straight up. Downward acceleration due to gravity begins immediately. At first, its effect is to reduce the upward speed. As soon as the upward speed is all gone, downward speed begins. Acceleration is constant throughout, but at the instant when upward speed becomes downward speed, the speed is zero.
When is the speed zero?
The speed is zero when an object is at rest or not moving. This can occur at any point during an object's motion when it changes direction or comes to a stop.
How do you prove that instantaneous velocity is zero if average velocity is zero over the same time period?
You can't prove that, because it's not necessarily true. All you can say isthat if the average is zero, then there must be some point during that timewhen the instantaneous is zero.If the average over some time period is zero, then one of two things must be true:-- Either it must be zero at every instant during that time,-- or else the (speed x time spent at that speed) moving forward must be equal tothe (speed x time spent at that speed) moving backward.If it's zero at every instant during that time, then of course the instantaneousvalue is zero at every time during the period. (We just said the same thing twice.)If the second condition is true, then there was some positive speed and somenegative speed at different points during the time. In order to change fromforward speed to backward speed, it has to be done gradually (continuously),so there must be some instant when it's zero.
Which of the following is true at the point where you reach the top of your jump on a trampoline?
At the top of the jump, your speed is changing from upward to downward speed, so there's an instant there where your speed is zero. -- Potential energy is max, because your height is max. -- Kinetic energy is zero, because your speed is zero.
Can particle have zero speed and non zero velocity?
No, a particle cannot have zero speed and non-zero velocity simultaneously. Speed is the magnitude of velocity and if speed is zero, then velocity must also be zero.
Which conditional jump instructions test z and c flag bits?
Conditional jump instructions that test the zero (Z) and carry (C) flag bits include JE (Jump if Equal) or JZ (Jump if Zero), which checks the Z flag, and JC (Jump if Carry), which checks the C flag. These instructions are commonly used in assembly language for decision-making based on the results of previous arithmetic or logic operations. The Z flag indicates whether the result of the last operation was zero, while the C flag indicates whether there was a carry out from the most significant bit during addition or a borrow during subtraction.
Does jump roping improve speed?
It will increase the speed at which you can jump rope. It won't effect the maximum speed of your mini-van however.
Why is speed important for high jump?
you need speed in triple jump to gain momentum to propel your forward in the jump. without it your jump will not be that far
Can an accelerating object have zero speed?
No, an accelerating object cannot have zero speed. Acceleration is the rate at which the speed of an object changes over time. If an object is accelerating, its speed is increasing or decreasing, but it cannot be zero.
Can an object be accelerating when it speed is zero?
Yes. There can be an instant during a period of acceleration when speed is zero. We can think of two examples right away: 1). Drop an object from your hand. As soon as you release it, downward acceleration begins immediately, but speed is zero. 2). Toss an object (like a baseball or a stone) straight up. Downward acceleration due to gravity begins immediately. At first, its effect is to reduce the upward speed. As soon as the upward speed is all gone, downward speed begins. Acceleration is constant throughout, but at the instant when upward speed becomes downward speed, the speed is zero.
What is an increase of speed during a given interval of time?
Acceleration is an increase in speed during a given interval of time. It measures how quickly an object's velocity is changing. Acceleration can be positive (speeding up), negative (slowing down), or zero (constant speed).
What is the average speed of a long jumper?
The average speed of a long jumper during their approach run is typically between 8 to 10 meters per second (approximately 18 to 22 miles per hour). This speed can vary based on the athlete's technique, strength, and experience. The speed is crucial for generating the necessary momentum to achieve maximum distance during the jump. Overall, the combination of speed, take-off angle, and technique determines the effectiveness of the jump.
Is it possible to have a situation in which the speed of a particle is always zero but the average speed is not zero?
Yes, it is possible. For example, if a particle moves back and forth between two points with different speeds, such that the time spent at each point is unequal, the average speed would not be zero even though the particle's speed is zero at each point.
