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That means that something is moving down.
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∙ 12y ago
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How do you calculate deceleration on a velocity time graph?
It is the downward gradient of the graph.
How is acceleration due to gravity be zero in a parachute?
At terminal velocity (constant velocity), the acceleration is zero, but prior to that, there is a downward acceleration.
Describe how the velocity and acceleration of an object change as it fell from tall building?
The magnitude of the velocity will increase. The velocity will be downward - and since it increases, the acceleration will be downward. The acceleration doesn't change (it will remain constant at about 9.8 m/sec2), unless air resistance becomes significant.
When you throw a ball up why does the vertical component undergo change?
Because there's a constant downward vertical force on the ball, so it must accelerate downward. If you give it an initial upward velocity, the magnitude of that upward velocity must steadily decrease, and it must eventually dwindle to zero and then become downward velocity. The constant downward vertical force on the ball is the force of attraction between the mass of the ball and the mass of the Earth, caused by gravity.
What is the magnitude of the velocity of a vertical projectile at its maximum height is equal to?
The horizontal component of a projectile's velocity doesn't change, until the projectile hits somethingor falls to the ground.The vertical component of a projectile's velocity becomes [9.8 meters per second downward] greatereach second. At the maximum height of its trajectory, the projectile's velocity is zero. That's the pointwhere the velocity transitions from upward to downward.
Downward velocity is considered a negative. true or false?
Downward velocity is considered a negative. This is a true statement.
How do you calculate deceleration on a velocity time graph?
It is the downward gradient of the graph.
What is velocity at which a falling object travels when the force of air resistence matches exactly the downward force of gravity?
terminal velocity
How is acceleration due to gravity be zero in a parachute?
At terminal velocity (constant velocity), the acceleration is zero, but prior to that, there is a downward acceleration.
Describe how the velocity and acceleration of an object change as it fell from tall building?
The magnitude of the velocity will increase. The velocity will be downward - and since it increases, the acceleration will be downward. The acceleration doesn't change (it will remain constant at about 9.8 m/sec2), unless air resistance becomes significant.
When you throw a ball up why does the vertical component undergo change?
Because there's a constant downward vertical force on the ball, so it must accelerate downward. If you give it an initial upward velocity, the magnitude of that upward velocity must steadily decrease, and it must eventually dwindle to zero and then become downward velocity. The constant downward vertical force on the ball is the force of attraction between the mass of the ball and the mass of the Earth, caused by gravity.
What is the magnitude of the velocity of a vertical projectile at its maximum height is equal to?
The horizontal component of a projectile's velocity doesn't change, until the projectile hits somethingor falls to the ground.The vertical component of a projectile's velocity becomes [9.8 meters per second downward] greatereach second. At the maximum height of its trajectory, the projectile's velocity is zero. That's the pointwhere the velocity transitions from upward to downward.
Is it possible for a body with zero velocity to have non-zero acceleration?
Yes, but only for a single instant in time. When you throw a golf ball or a rock straight up, it has the constant downward acceleration of gravity from the moment it leaves your hand, but its velocity is certainly not constant. The velocity steadily decreases until the peak of the toss, and then it switches from upward to downward velocity. At the very peak, the velocity is zero for an instant.
When the upward and downward forces on a falling object or changes its direction is called an?
Terminal Velocity.
Are the directions of the velocity and acceleration of a falling body the same?
Yes, both are directed downward.
What does a downward sloping diagonal line mean in a velocity vs time graph?
This means your velocity is decreasing with time, or in other words, the object is slowing down.
How does gravity affect the velocity of a fired bullet?
Gravity adds 32.1 feet per second to the bullet's downward velocity every second after the shot is fired.
