posted by .

1.What is the acceleration of a projectile when instantaneous vertical velocity is zero at the top of its trajectory?

  • Physics -

    The acceleration is always -g, in the downward direction if distance is measured positive upwards.

  • Physics -

    it depends... when you talk about acceleration of object going downward, its -g... when acceleration going up, example an object is thrown, i think its 0.

    ax=o; ay= -g

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    The velocity of a projectile at launch has a horizontal component v_h and a vertical component V_V. Air resistence is negligible. When the projectile is at the hightest point of its trajectory, which of the following show the vertical …
  2. physics

    A projectile of mass 0.777 kg is shot from a cannon, at height 6.6 m, as shown in the figure, with an initial velocity vi having a horizontal component of 7.8m/s. The projectile rises to a maximum height of ∆y above the …
  3. physics

    For the one dimensional motion of an object along an axis, choose all the statements that are True. 1.) If the object reverses direction and goes the opposite way, the sign of the velocity changes. 2.) If the acceleration has the opposite …
  4. physics

    a projectile is thrown from the ground with an initial velocity of 20.0 m/s at an angle of 40.0 degrees above the horizontal. find the projectile's maximum height, the time required to reach its maximum height, its velocity at the …
  5. Physics

    A ball is thrown as a projectile with a horizontal velocity of 30 m/s and a vertical velocity of 30 m/s. At the highest point which of the following is true?
  6. Physics

    Suppose the position of an object at time t is (6 + 5t, 2t2, 7t − 5t3). (a) What is the instantaneous velocity at time t?
  7. Physics

    If you throw a ball into the air at some angle with respect to the horizontal, which of the following statements about the ball is true?
  8. Physics

    This deals with Projectile Motion and I would be glad if someone were to check if my answers are correct. 1. c 2. b 3. a 4. d If air resistance were to be ignored, 1.a projectile that has a horizontal velocity is a)zero b)constant …
  9. physics

    a projectile is thrown from the ground with an initial velocity of 20.0m/s at an angle of 40 degrees above the horizontal, find the maximum height,the time required to reach its maximum height,c) it velocity at the top of the trajectory.d) …
  10. Physics

    1. Which statement below is true? a. If a car is traveling eastward, its acceleration is eastward. b. If a car's speed is decreasing, its acceleration must be negative. c. If a particle is moving, it must have a non-zero acceleration.

More Similar Questions