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Question 1

What is the equation for final velocity in uniformly accelerated motion?

Answer 1

V_f = V_i + at

Question 2

What is the equation for distance in uniformly accelerated motion?

Answer 2

d = V_i t + 1/2 at^2

Question 3

What is the equation relating final velocity squared to initial velocity and acceleration?

Answer 3

V_f^2 = V_i^2 + 2ad

Question 4

What condition must be met for the equations of uniformly accelerated motion to be applicable?

Answer 4

Acceleration must be constant

Question 5

True or False: Air resistance can be ignored in projectile motion under special circumstances.

Answer 5

True

Question 6

What is the vertical acceleration of a projectile in free fall?

Answer 6

g = –9.8 m/s²

Question 7

What shape does the center of mass of a projectile follow during its flight?

Answer 7

Parabolic path

Question 8

What happens to vertical velocity at the peak of a projectile’s flight?

Answer 8

Vertical velocity is exactly zero

Question 9

What factors influence projectile motion?

Answer 9

• Velocity of release
• Relative height of release
• Angle of release

Question 10

Fill in the blank: The optimum angle of release for maximum distance on level ground is ______.

Answer 10

45°

Question 11

What occurs when the height of takeoff is greater than the height of landing in projectile motion?

Answer 11

Optimum angle of release is less than 45°

Question 12

How does increasing the speed of release affect projectile motion?

Answer 12

Increases distance and time of flight

Question 13

What is the effect of angle of release on horizontal and vertical velocities?

Answer 13

Affects their ratio; overall effect is minimal

Question 14

What is the effect of height of release on projectile motion?

Answer 14

Increases time of flight

Question 15

What is the relationship between time up and time down when height of takeoff equals height of landing?

Answer 15

time_up = time_down

Question 16

In the context of long jump, what is the optimum takeoff angle considering a relative height greater than 0?

Answer 16

Less than 45°

Question 17

What is the total time of flight if the ascent and descent times are equal?

Answer 17

t_total = t_up + t_down

Question 18

How do jumping mats work in relation to time of flight?

Answer 18

Time is divided equally between ascent and descent

Question 19

What determines the maximum reach height in jumping?

Answer 19

• Maximize takeoff height
• Maximize flight height
• Minimize loss height

Question 20

What is the significance of takeoff velocity in projectile motion?

Answer 20

It determines the initial velocity of the projectile

Question 21

True or False: The vertical speed at takeoff is equal to the vertical speed at landing when height is equal.

Answer 21

True

Question 22

What happens to vertical speed at the apex of a jump?

Answer 22

Vertical speed is 0 m/s