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A 100.0 kg ball has a velocity of 0 m per sec It is pushed until the velocity is 25 m per sec How much work was done to the car?
Wiki User
∙ 13y ago
No work was done to the car. All of your effort was spent pushing the ball.
You pushed it until its speed was 25 m/s. Its kinetic energy is then (1/2) (m) (v)2 = 50 x 625 = 31,250 joules.
That's the work that you put into the ball. The car is still just sitting there.
Wiki User
∙ 13y ago
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You throw a ball straight up with a velocity of 40 meters per second What is the ball's velocity after 5 seconds?
it is 10 meters per second straight down
If a ball is rolling in a straight line and you push it to the right what happends to the velocity?
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A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant before it hits the ground?
A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant before it hits the ground?
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The horizontal velocity has no bearing on the time it takes for the ball to fall to the floor and, ignoring the effects of air resistance, will not change throughout the ball's fall, so you know Vx. The vertical velocity right before impact is easily calculated using the standard formula: d - d0 = V0t + [1/2]at2. For this problem, let's assume the floor represents zero height, so the initial height, d0, is 2. Further, substitute -g for a and assume an initial vertical velocity of zero, which changes our equation to 0 - 2 = 0t - [1/2]gt2. Now, solve for t. That gives you the time it takes for the ball to hit the floor. If you divide the distance traveled by that time, you know the average vertical velocity of the ball. Double that, and you have the final vertical velocity! (Do you know why?) Now do the vector addition of the vertical velocity and the horizontal velocity. Remember, the vertical velocity is negative!
What is the average velocity of a baseball?
The average velocity of a baseball is very nearly zero. From the time it leaves the factory until the time its outer coat is ripped off and the ball is discarded, it spends almost all of the time in a box on a shelf, and only a very small part of the time in motion.
What moves faster a ball thrown down or a ball falling down?
A ball thrown down. The thrown ball will have a greater initial velocity and since they experience the same force of gravity, it will always be faster (until they both reach terminal velocity).
What happens to the horizontal velocity of a ball after it rolls off a table?
The horizontal velocity will be equal to the translational velocity of the ball right before it falls off the table. ============================== When we do exercises that deal with the behavior of the ball after it leaves the edge of the table, we always ignore air resistance. When we do that, the horizontal component of velocity remains constant forever, or at least until the ball hits something.
What does the second law of motion have to do with soccer?
If a player runs and dribble the ball he pushed and run with varying momentum velocity therefore in a specific time frame
A 250 g ball travels at a velocity of 40 ms Its momentum is what?
A 250 g ball travels at a velocity of 40 m/s. Its momentum = mv where m is mass in kg and v is velocity in m/s mv = 250/1000 x 40 10 kg m/s
What effect does fraction have on the velocity of the ball?
Do you mean "What effect does friction have on the velocity of the ball?"
You throw a ball straight up with a velocity of 40 meters per second. What is the ball's velocity after 3 seconds?
You throw a ball straight up with a velocity of 40 meters per second. What is the ball's velocity after 3 seconds?
What will drop faster a metal ball or a racket ball?
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The ball's velocity changes to 0m/s and the boy's stays the same.
How high can a ball go?
The maximum height of a thrown ball is dependent on the upward portion of the initial velocity. Air friction will slow it somewhat but gravity will cause it to lose most of its upward velocity. The velocity will decrease by 9.8 m/sec for each second of its upward motion, until it reaches zero. At that point, the ball is pulled back toward Earth.
How a displacement of a vertically thrown ball varies with time?
It is converted to the ball's velocity or it is known as its velocity because displacement changes with time is known as velocity.
Which ball has more velocity on grass?
a cricket ball
How long will it take a skydiver to fall 1000 at terminal velocity?
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