22. An object with a mass of 25 kg is falling in air and experiences a force due to air resistance of 42 N What is the net force acting on the object and at what rate is it accelerating toward the ground?

A box remains stationary after it has been placed on a ramp inclined to the horizontal. Which of the following statements must be true about the magnitude of the frictional force acting on the crate? a. It is greater than the component of the gravitational force acting down the ramp. b. It is equal ustaticFN c. It is equal to the component of the gravitational force acting down the ramp. d. It is greater than the weight of the box. e. At least it is almost equal to the weight of the box.   If an object of mass m moves with constant speed v, the net force on the object is: a. mv b. ma c. mg d. None of these answers is correct e. 0

16. A reaction force when you go up to a wall and push on it is that the wall pushes back on you. What is preventing you from moving (in most cases)? Explain.

i) A pig has weight 500 N. It stands on a scale in an elevator, which reads 530 N. Which is correct? A. the elevator is moving at constant velocity B. the elevator is stationary C. the elevator is accelerating up D. the elevator is accelerating down.

1. A pair of crates are in contact with one another on a horizontal frictionless surface. The first crate has a mass of 3.0kg, while the second has a mass of 12kg. You push on the 3.0-kg crate to the right with a force of 60N, causing it to press against the second crate and move them both. What is the acceleration of each crate? What is the force that the lighter crate exerts on the heavier crate as it presses against it?

3. Starting from rest, a 150 kg body experiences a force of 100 newtons acting on it in a direction parallel to the positive x-axis and a force of 150 newtons acting at 55° with respect to the positive x-axis.a. What is the net force acting on the body? Include direction.b. What is the acceleration of the body?c. What velocity does it reach after 5 seconds?

3. Starting from rest, a 125 kg body experiences a force of 150 newtons acting on it in a direction parallel to the positive x-axis and a force of 125 newtons acting at 45° with respect to the positive x-axis. a. What is the net force acting on the body? Include direction. b. What is the acceleration of the body? c. What velocity does it reach after 2.5 seconds?

A 5.00 kg chair is sliding sideways at a constant velocity. You are pushing the chair with a 40.0 N force in the direction of motion during this time while it moves a distance of 3.50 m.  a) What is the acceleration of the chair? b) What is the net force on the chair? c) What is the force of gravity on the chair?

A skier with a mass of 50 kg went down a smooth snowy slope that makes an angle of 25 degrees with the horizontal line. 1.  What's the net force acting on the skier?  2. What's the skier's rate of acceleration going down the snowy slope?

A “normal force” only exists if an object is A. On a surface B. In midair C. More massive than 1 kg D. Being pulled by a rope, string, or similar