Physics 11

posted by .

In the absence of air resistance, a ball of mass m is tossed upward to reach a height of 20m. Given that Fg=mg, what is the net force on the ball at the 10m position (half way up)?
a)2mg b)mg c)mg/4 d)mg/2

I already got this wrong bc I had no idea how to solve. I have a midterm coming up & I'm worried about a similar question, can someone show me step by step how I should have solved for that?

Thanks a ton!! :)

  • Physics 11 -

    the net force on the ball is only from gravity, mg. Remember, even half way upwards, it is still accelerating downward due to the force of gravity.

  • Physics 11 -

    the ball is in free fall with no air resistance

    gravity is the only force on the ball

    net force is ... m g

  • Physics 11 -

    Ok, so then is it fair to say that when Fapp releases an object in the air or on a horizontal surface Fnet= the opposing force?

    Thanks :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. (Ignore air resistance.) (a) How far horizontally …
  2. Physics

    A baseball is tossed at a steep angle into the air and makes a smooth parabolic path. Its time in the air is t and it reaches a maximum height h. Assume that air resistance is negligible. a. Show that the height reached by the ball …
  3. physics

    A ball is thrown upward. After reaching a maximum height, it continues falling back to- ward Earth. On the way down, the ball is caught at the same height at which it was thrown upward.If the time (up and down) the ball remains in …
  4. physics

    A baseball is tossed at a steep angle into the air and makes a smooth parabolic path. Its time in the air is t and it reaches a maximum height h. Assume that air resistance is negligible. a.) Show that the height reached by the ball …
  5. physics

    In a serve, a tennis player hits the ball horizontally. Neglect the effects of air resistance and the diameter of the ball. What minimum speed is required for the ball to clear the .9m net 15.0 m from the servier if the ball is launched …
  6. Physics

    A small lead ball, attached to a 1.50-m rope, is being whirled in a circle that lies in the vertical plane. The ball is whirled at a constant rate of three revolutions per second and is released on the upward part of the circular motion …
  7. physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=2×10^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides …
  8. physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=2×10^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides …
  9. Physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=2×10^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides …
  10. Math-Trig

    A ball is tossed up in the air at an angle of 70 degrees with the horizontal and with an initial velocity of 36 ft/sec. What is the position of the ball 1 second after it is released?

More Similar Questions