Gravity and Air Resistance Questions

Related BrainMass Solutions

• Acceleration of a rock and a sky diver

  This is because in vertical motion, the acceleration due to gravity always keeps acting vertically downwards, whether the body is moving up or down, and considering that air resistance is neglected.

• Falling objects Air resistance Gravity Gravitational force

  Hence, Upward air resistance = weight k A Vt2 = mg Vt = sqrt(mg/kA) ------------ (1) This expression will help us to answer the following two questions.

• Net Force acting on a ball

  zero N. 2) A ball is thrown up into the air. Ignore air resistance. When it is rising and reaches half of its maximum height, the net force acting on it is equal to its weight. greater than its weight.

• Velocity, conservation of momentum, force, force of gravity

  You take air resistance into account. Air resistance depends on many things, such as the density of an object and its cross-sectional area (thought not, strictly speaking, it's mass).

• Working with projectile motion

  Acceleration on the bomb is just the acceleration due to gravity and is a constant. Thus b is true. If the air resistance is negligable then the bomb will be in the same horizontal position as the plane until it hits the ground.

• Work & Energy - Average Force of Air Resistance

  Neglecting gravity, estimate the average force of air resistance during a pitch, if the distance between the plate and the pitcher is about 15 m.

• a vector equation

  378729 Vector Equation: Example Question A golf ball is hit at an angle a with the horizontal and moves under gravity with air resistance kv per unit mass, where v is the velocity and k>0 is a constant.

• Energy of a Spacecraft (Energy; Gravitational Force; Speed)

  Neglect air resistance throughout this problem, since the spacecraft is primarily moving through the near vacuum of space.

• Calculate the limit of a falling object (with air-resistance) using L'Hopital's rule.

  /(c)][1-e^([-ct]/m)] where g is the acceleration due to gravity and c is a positive constant.