0
A student throws a ball up in the air with an initial velocity of 12 Meters per Second and then catches it as it comes back down to him. What is the ball's velocity when he catches it?
Wiki User
∙ 15y ago
As the ball leaves the student's hand it has a certain energy due to motion (Kinetic Energy). This energy is decreased as the ball rises and slows down. The energy is not lost. It is changing to energy due to position (Potential Energy). At the very top of the rise of the ball, where it stops, it has exactly the same Potential Energy as it had Kinetic Energy when it left his hand.
It will start back down, losing Potential Energy and gaining Kinetic Energy on the way. When the student catches it it will have exactly the same Kinetic Energy it had when it left his hand on the way up. A very small portion of the energy is converted to the energy in heat due the air friction.
In it's total travel absolutely no energy is lost.
Wiki User
∙ 15y ago
Wiki User
∙ 16y ago696 meters
Add your answer:
Earn +20 pts
What is the initial velocity if you kick a rock off a bridge that is 450 meters high and it travels a horizontal distance of 32 meters before hitting the water below?
You kicked the rock with an initial velocity of 3.4 m/s.
If a student travels 20 meters in 5 seconds what is the students velocity?
4 m/s
A girl throws a tennis ball upward with an initial velocity of 4 meters per second . What is the maximum displacement of the ball?
0.82 metres.
What is the velocity of a ball dropped on the surface of Mars if the acceleration of gravity is 3.7 meters per second squared?
When given a constant acceleration, just multiply it by time, t, to detemine the final velocity. If the initial velocity was zero (as is the case when you drop something), then the average velocity is half the terminal velocity.
If a planes initial speed is 0 meters per second and is accelerated at 15 meters per second squared what is its speed for 0-10?
The plane's velocity at 10 seconds will be 150 meters per second or 335.54 mph
An arrow in flight has an initial velocity of 65 meters per second and 10 seconds later it has a velocity of 35 meters per second Which is the acceleration of the arrow?
Acceleration of the arrow is -3m/s2A = (velocity minus initial velocity) / time
What object shoots upward with an initial velocity of 6 meters per second?
anything shot up with that initial velocity. There isn't anything in specific.
If the launch angle is 15 degrees and the initial velocity is 50.0 meters per second what is the range?
If the initial velocity is 50 meters per second and the launch angle is 15 degrees what is the maximum height? Explain.
What is the initial velocity if you kick a rock off a bridge that is 450 meters high and it travels a horizontal distance of 32 meters before hitting the water below?
You kicked the rock with an initial velocity of 3.4 m/s.
What is initial velocity measured in?
Initial velocity can be measured in the same units as any other velocity. In SI, that would be meters per second, but often km / hour are used, or (in a minority of countries) feet/second or miles/hour.
When acceleration occurs?
Acceleration occurs when velocity changes over time. The formula for it is as follows: a = (Vf - Vi) / t a: acceleration (meters/seconds2) Vf: Final velocity (meters/seconds) Vi: Initial Velocity (meters/seconds) t: Time (seconds)
If a student travels 20 meters in 5 seconds what is the students velocity?
4 m/s
A piece of metal has attained a velocity of 107.8 meters per second after falling for ten seconds what is its initial velocity?
the answer is 24-9 m/sec. yuor welcome
What will be the final velocity if the acceleration of 10 meters per second squared is sustained for 7 seconds?
It will depend upon the initial velocity of the body. If 'u' be the initial velocity of the body, then the final velocity will be: v = u + at (v = final velocity, a = acceleration, t = time) i.e., v=u+10*7 = (u + 70) m/sec. If u=0 (i.e the initial velocity be zero) then final velocity, v=70 m/sec.
The velocity of a car changes from 60 meters per second north to 45 meters per second north in 5.0 seconds The magnitude of the car's acceleration is?
a=change over velocity/time 60-initial velocity 45-final velocity 45-60= 15m/s 15/5= 3- acceleration
A girl throws a tennis ball upward with an initial velocity of 4 meters per second. What is the maximum displacement of the ball?
0.82 metres.
A girl throws a tennis ball upward with an initial velocity of 4 meters per second . What is the maximum displacement of the ball?
0.82 metres.
