Physics

A tennis ball isdropped from 1.52m abovethe ground. It rebounds to a height of 0.918 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s2 . (Let down be negative.) Answer in units of m/s.
(part 2 of 3) With what velocity does it leave the ground? Answer in units of m/s.
(part 3 of 3) If the tennis ball were in contact with the ground for 0.0107 s, find the acceleration given to the tennis ball by the ground. Answer in units of m/s2.

  1. 👍
  2. 👎
  3. 👁
  1. (1/2) m v^2 = m g h
    (1/2) v^2 = gh
    or
    v = sqrt (2 g h) (remember that for dropped object)
    so
    v at ground = -sqrt (2*9.8*1.52)

    now
    goes up .918 meter
    same deal in reverse
    v up at ground = +sqrt (2*9.8*.918)

    a = change in velocity/change in time
    = [ +sqrt (2*9.8*.918)- - sqrt (2*9.8*1,52) ] / 0.0107

    note - - is +

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. college physics

    a tennis ball is thrown straight up with an initial velocity of 22.5 m/s. it is caught at the same distance above the ground. a). how long does it take to reach its maximum height? b). how high does the ball rise? c). at what

  2. Physics

    You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 8.0 m/s. (a) How much time does it take for the tennis ball to reach its maximum

  3. physics

    A tennis ball is dropped from 1.76 m above the ground. It rebounds to a height of 0.928 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s 2

  4. physics

    A tennis ball is dropped from 1.93 m above the ground. It rebounds to a height of 0.921 m.With what velocity does it hit the ground?The acceleration of gravity is 9.8 m/s2.(Letdown be negative.)Answer in units of m/s.

  1. Physics

    A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the

  2. Physics

    You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.8 m/s. (a) How much time does it take for the tennis ball to reach its maximum

  3. physics

    A tennis ball is dropped from 1.47 m above the ground. It rebounds to a height of 1 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s 2 . (Let down be negative.) Answer in units of m/s. 021 (part

  4. alg2

    suppose you drop a tennis ball from a height of 15 feet. After the ball hits the floor, it rebounds to 85% of its previous height. How high will the ball rebound after its third bounce. round to the nearest tenth.. my teacher told

  1. physics

    020 (part 1 of 3) 10.0 points A tennis ball is dropped from 1.97 m above the ground. It rebounds to a height of 0.901 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s 2 . (Let down be negative.)

  2. science

    A ball of mass 1 kg dropped from 9.8m height , strikes the ground and rebounds to a height of 4.9m .If the time of contact between ball and ground is 0.1s,then find impulse and average force acting on ball.

  3. Physics

    A tennis ball is dropped from 1.98 m above the ground. It rebounds to a height of 1.05 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s2 . (Let down be negative.) Answer in units of m/s Confused

  4. Physics

    A tennis ball is dropped from 1.54 m above the ground. It rebounds to a height of 0.845 m. With what velocity does it hit the ground? The acceleration of gravity is 9.8 m/s^2 . (Let down be negative.) Answer in units of m/s.

You can view more similar questions or ask a new question.