Describe three situations in which a force changes the velocity of an object?

Answer 1

1). Force applied to a moving object, in the direction of its motion. Speed increases, direction remains unchanged.

2). Force applied to a moving object, opposite to the direction of its motion. Speed decreases, direction remains unchanged.

3). Force applied to a moving object, in an arbitrary direction not parallel to the direction of motion. Speed and direction both change.

4). (bonus): Force applied to a moving object, force is kept exactly perpendicular to the direction of motion at every instant. Speed remains constant, path of the motion becomes circular.

Answer 2

-- When a ball is dropped off the edge of a cliff, the force of gravity causes

its downward speed to increase continuously and at a constant rate.

-- When you spin a yo-yo around your head on the end of its string

at a constant rate, the tension in the string causes the direction of

its motion to change continuously.

-- The gravitational force between the Earth and a TV satellite causes

the direction of the satellite's motion to change continuously.

Answer 3

1. A car accelerates as the driver presses the gas pedal, applying a force that increases the car's velocity.
2. A soccer player kicks a ball, exerting a force that changes the ball's velocity.
3. A rocket is launched into space, with the force of the engines propelling it forward and changing its velocity.

Answer 4

Drop a stone, the force due to gravity accelerates it .

Force from an engine accelerating a car.

Braking force decelerating a car.

Answer 5

Find it out you lazys stop making us nerds figure it out