Change in Momentum

A change in momentum takes ​ (a)   and ​ (b)   . (p.194)​

• force
• time
• pressure
• turnovers
• defense
• blocks
• options
• sacks
• free
• throws

Ball A is moving at a speed of 99 mph. Ball B is moving at a speed of 33 mph. Your hand requires the most force to catch which ball?

• Ball A

• Ball B

• both balls require the same amount of force

See Figure 1.2 on page 194: When the ball is moving very fast, what must the player do to change the ball's momentum and quickly bring it to a stop?

• exert a large force over a short time

• exert a small force over a long time

• exert no force

• use his opposite foot

force x time interval = ​ (a)   (p.194)

• change in momentum
• acceleration
• change in volume
• change in mass
• power
• work

• mv_f - mv_i

• (mv_f + mv_i)²

• W

• Fd

True or False:

A small force acting for a long time cannot produce the same change in momentum as a large force acting for a short time. (p.194)

• True

• False

What is the formula for the impulse-momentum theorem? (p.194)

Type the definition for impulse: (p.194)

(p.194, last paragraph)--List two examples of how change in momentum plays a crucial role in many sports:

In sample problem B on p. 195, what are you asked to find?

• force

• speed

• time

• power