Deck 11: The Description of Human Motion

Question 1

The time required for an object to reach the highest point of the parabolic path will be ____ the time it takes it to fall back to the same height.

A) less than
B) equal to
C) greater than
D) not related to

Answer 1

equal to

Question 2

Which best describes the horizontal velocity of a projectile that is moving in the second half of a parabola?

A) decreasing
B) increasing
C) not changing
D) zero

Answer 2

not changing

Question 3

Which type of motion is produced by any force that is not through the axis of rotation?

A) linear
B) rotary
C) straight line motion
D) rectilinear

Answer 3

rotary

Question 4

If a sprinter starting a race covers 13 meters in the first 1.5 seconds of the race, what will the velocity be at the end of this 1 second?
What will the acceleration from the start be?

Question 5

It is known that the time of flight of an object depends upon the ____ component of velocity.

A) vertical
B) horizontal
C) resultant

Question 6

Why will a foul ball hit straight up and a home run which reaches the same height land at the same time (if they are hit at the same time)?

Question 7

Which would land first: a foul ball hit straight up or a home run that reaches the same height?

A) foul ball
B) home run
C) land at the same time
D) not enough information

Question 8

Why is it easier to hit a home run with the hands at the end of the bat rather than when "choking up"?

Question 9

What determines the horizontal distance that a projectile will have?

A) horizontal velocity of object
B) time that object is in flight
C) both a and b
D) none of the above

Question 10

Why is it important to strive for height when executing the long jump?

Question 11

Why can you hit a golf ball farther with a driver (#1 wood) than with a #9 iron?

Question 12

As the angle of projection increases the ____ component increases in relation to the ____ component.

A) vertical, horizontal
B) vertical, resultant
C) resultant, horizontal
D) horizontal, vertical

Question 13

What type of motion is exhibited by the leg segments of a sprinter running a 100 meter dash?

A) angular
B) constant
C) linear
D) translatory

Question 14

What is the relationship between the angular and linear velocities of a lever?

A) angular velocity is equal to linear velocity times the length of the lever
B) linear velocity is not affected by lever length or angular velocity
C) linear velocity is equal to the angular velocity divided by the length of the lever
D) linear velocity is equal to the angular velocity times the length of the lever
Short Answer Questions

Question 15

The radian is a unit of displacement used in which type of measurement?

A) rotary
B) linear
C) speed
D) time

Question 16

Which is an example of linear motion in sport?

A) leg movements of a sprinter
B) movement of center of gravity of a diver
C) arm movements of a shot putter
D) movement of the center of gravity of a putted golf ball

Question 17

What is the acceleration when the velocity of an object is constant?

A) zero
B) increasing
C) decreasing
D) constant

Question 18

Which term describes a projectile moving vertically in the second half of a parabola?

A) accelerating
B) decelerating
C) not changing velocity
D) not changing displacement

Question 19

Neglecting air resistance, which of the following statements best represents the velocity of a projectile at the top of the path?

A) vertical velocity is zero
B) horizontal velocity is changing
C) horizontal velocity is zero
D) resultant velocity is maximal

Question 20

What determines the type of motion of a freely moveable object?

A) amount of force applied
B) location of center of gravity
C) point at which force is applied
D) shape of object