ch05_projective_motion NOT NEEDED FOR MR ROSEN CLASS.ppt

Open Ended

Why is it important to study the horizontal and vertical components of projectile motion separately?

Multiple Choice

When you throw a baseball, what type of motion does it follow?

• It moves in a straight line at constant speed.

• It moves in a curved path due to both horizontal and vertical motion.

• It moves only vertically with increasing speed.

• It remains stationary after being thrown.

Multiple Select

Which of the following are vector quantities?

• Velocity

• Acceleration

• Momentum

• Mass

Multiple Choice

Which of the following best describes the difference between a vector quantity and a scalar quantity?

• A vector quantity has both magnitude and direction, while a scalar quantity has only magnitude.

• A vector quantity has only magnitude, while a scalar quantity has both magnitude and direction.

• A vector quantity can only be positive, while a scalar quantity can be negative.

• A vector quantity is always larger than a scalar quantity.

Open Ended

How does a scalar quantity differ from a vector quantity?

Multiple Choice

If you use a scale of 1 cm = 20 km/h, what velocity does a 3-cm-long vector pointing to the right represent?

• 60 km/h to the right (east)

• 20 km/h to the right (east)

• 40 km/h to the right (east)

• 80 km/h to the right (east)

Open Ended

Explain how the velocity of an airplane relative to the ground is affected when it flies with the wind versus against the wind.

Multiple Choice

If an airplane is flying north at 80 km/h relative to the air and there is a tailwind blowing north at 20 km/h, what is the airplane's velocity relative to the ground?

• 100 km/h

• 80 km/h

• 60 km/h

• 20 km/h

Multiple Choice

When an 80-km/h airplane is caught in a 60-km/h crosswind blowing from west to east, what is the resultant speed of the airplane relative to the ground?

• 100 km/h

• 140 km/h

• 80 km/h

• 60 km/h

Multiple Select

Which of the following statements are true about the resultant vector when two vectors are at right angles?

• The resultant is the diagonal of the rectangle formed by the two vectors.

• The resultant is equal to the sum of the magnitudes of the two vectors.

• The resultant is always greater than either of the original vectors.

• The resultant is always perpendicular to both vectors.

Open Ended

Describe how to determine the magnitude and direction of the resultant when two vectors are perpendicular to each other.

Open Ended

Suppose that an airplane normally flying at 80 km/h encounters wind at a right angle to its forward motion—a crosswind. Will the airplane fly faster or slower than 80 km/h?

Open Ended

What is the resultant of two perpendicular vectors?

Multiple Choice

Which of the following statements is true about the perpendicular components of a vector?

• They are dependent on each other.

• They are independent of each other.

• They always have equal magnitudes.

• They cannot be resolved.

Open Ended

Explain how the concept of vector components helps in understanding the motion of a projectile, such as a ball thrown at an angle.

Multiple Choice

A ball’s velocity can be resolved into which two components?

• Horizontal and vertical

• Horizontal and diagonal

• Vertical and diagonal

• Forward and backward

Multiple Choice

Which of the following best describes the relationship between vectors X, Y, and V as shown in the diagram?

• V is the sum of X and Y, which are perpendicular components.

• X and Y are equal in magnitude to V.

• V is the difference between X and Y.

• X and Y are parallel to each other.

Open Ended

How do components of a vector affect each other?

Multiple Choice

Which of the following statements about projectile motion is correct?

• The horizontal component of a projectile's motion is unaffected by gravity.

• The vertical component of a projectile's motion is constant.

• Both horizontal and vertical components of a projectile's motion are affected equally by gravity.

• The horizontal component of a projectile's motion is like a freely falling object.

Open Ended

Explain why the velocity of a ball rolling along a horizontal surface remains constant, according to the concept of projectile motion.

Open Ended

What questions do you still have about the relationship between horizontal and vertical components in projectile motion?

Multiple Choice

How does projectile motion differ from simple straight-line (linear) motion?

• Projectile motion involves both horizontal and vertical components, while linear motion involves only one direction.

• Projectile motion is always faster than linear motion.

• Linear motion involves acceleration in both directions, while projectile motion does not.

• Projectile motion only occurs in space.