Motion and Kinematics

What is the difference between speed and velocity?

• Speed and velocity are the same thing.

• Speed is the magnitude of velocity without direction.

• Velocity is the magnitude of speed without direction.

• Velocity is the distance traveled in a given time.

Define acceleration and provide an example of an object experiencing acceleration.

• An example of an object experiencing acceleration is a car speeding up from a stop sign.

• A ball rolling down a hill at a constant rate

• A plane flying at a steady altitude

• A person walking at a constant speed

Explain the concept of displacement and how it is different from distance.

• Displacement is the total length of the path traveled, while distance is the straight-line measurement.

• Displacement is a scalar quantity, while distance is a vector quantity.

• Displacement takes into account the direction of motion, while distance does not.

• Displacement is always positive, while distance can be negative.

What is the equation for average speed and how is it calculated?

• Average speed = Total distance / Total time

• Average speed = Total distance * Total time

• Average speed = Total distance - Total time

• Average speed = Total time / Total distance

Describe the difference between uniform motion and non-uniform motion.

• Uniform motion only occurs in one dimension, while non-uniform motion occurs in multiple dimensions.

• Uniform motion is always at rest, while non-uniform motion is always in motion.

• Uniform motion maintains a constant speed and direction, while non-uniform motion changes its speed and/or direction.

• Uniform motion is always in a straight line, while non-uniform motion is always in a curved path.

What is the significance of the slope of a position-time graph?

• The significance of the slope of a position-time graph is that it represents the color of the object.

• The significance of the slope of a position-time graph is that it represents the velocity of the object.

• The significance of the slope of a position-time graph is that it represents the mass of the object.

• The significance of the slope of a position-time graph is that it represents the temperature of the object.

Explain the concept of instantaneous speed and how it is different from average speed.

• Instantaneous speed is the speed of an object at a specific point in time, while average speed is the total distance traveled divided by the total time taken.

• Instantaneous speed is the speed of an object over a long period of time

• Average speed is the speed of an object at a specific point in time

• Instantaneous speed is the speed of an object when it is not in motion

Define projectile motion and provide an example of a projectile motion scenario.

• An example of projectile motion is a baseball being hit by a bat and then following a curved path before landing on the ground.

• A person jumping up and down

• A car driving in a straight line

• A bird flying in the sky

What is the equation for calculating acceleration and how is it derived?

• The equation for calculating acceleration is a = (v + u) / t

• The equation for calculating acceleration is a = (v - u) * t

• The equation for calculating acceleration is a = v * t / u

• The equation for calculating acceleration is a = (v - u) / t, where a is acceleration, v is final velocity, u is initial velocity, and t is time.

Describe the concept of relative motion and provide an example of its application.

• Relative motion only applies to objects in outer space

• Relative motion involves calculating the motion of an object with respect to a particular frame of reference. An example of its application is when a person walks on a moving train.

• An example of relative motion is a stationary object on a still surface

• Relative motion is the same as absolute motion