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  1. T

    Two objects meet

    i started to solve the problem by naming the unknows and what data is given. and i called the boy on the roof B1 and the other boy B2 i also have acceleration= 9.8 m/s2
  2. T

    Two objects meet

    ok so.
  3. T

    Acceleration and velocity

    since i have velocity in sec3, i can used it as vf for section 2..is that right?
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    Acceleration and velocity

    ok, so first: i did a diagram divided into 3 sec: 1- when the turtle is going at constant acceleration (only initial velocity is given = 0) 2- when he gets to the fence (where time and displacement is given t=10 , d=10) 3- where he passes the tree (only velocity = 1.2m/s) is given =] in section...
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    Two objects meet

    i drew the diagram...but i dont know how to start to solve, if you help me to get started i can do the rest
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    Acceleration and velocity

    i did try it,but i dont know it what i did is right, because i let 1.2 be the final velocity of the segment of motion where time and displacement is given, to find acceleration. But i dont know if what i did is right... =[
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    Velocity and acceleration of a turtle

    a turtle is moving with a constant acceleration along a straight ditch. He starts a stopwatch as the turtle passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along a ditch. as the turtle passes the pine tree, his speed is 1.2m/s. how far was he from the...
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    Acceleration and velocity

    a turtle is moving with a constant acceleration along a straight ditch. He starts a stopwatch as the turtle passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along a ditch. as the turtle passes the pine tree, his speed is 1.2m/s. how far was he from the...
  9. T

    Two objects meet

    tow students are randomly attacking each other with water balloons. one student is on the roof and the other is on the ground below. the student on the roof throws a water balloon straight down with an initial speed of 5.2m/s and the student below throws his up at a rate of 7.1m/s. if the...
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    Forces on a sliding box

    1. a box of mass 12 kg slides at a speed of 10 m/s acros a smooth level floor, where it enters a rough portion 3.0 m in length. In the rough portion, the box experiences a horizontal friction force of 72N. a) how much work is done by the frictional force? b) what is the velocity of the box...
  11. T

    Forces and velocities of a sliding box

    1. a box of mass 12 kg slides at a speed of 10 m/s acros a smooth level floor, where it enters a rough portion 3.0 m in length. In the rough portion, the box experiences a horizontal friction force of 72N. a) how much work is done by the frictional force? b) what is the velocity of the box...
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