We can apply the equation Ft = change in (mv) to the case of a ...

[ts19998]

We can apply the equation Ft = change in (mv) to the case of a baseball player striking a pitched ball. To impart the maximum change in momentum, mv, to the ball, the batter hits the ball with the greatest force he can muster and he also
 
  1) extends the time of contact as much as possible by following through.
  2) makes the time of contact as short as possible, thereby increasing the force.
  3) none of the above
 
  In the impulse-momentum equation applied to hitting the ball, the v represents
  4) the velocity of the bat.
  5) the velocity of the ball.
  6) a vector quantity.

Question 2

A sports car and a moving van move at the same speed when they crash into a cement wall and stop equally quickly. The vehicle to have the greater force of impact will be
 
  1) the sports car,
  2) the van,
  3) neither, for they experience equal forces of impact
 
  because
  4) they are traveling at the same speed.
  5) the van's momentum is much greater.
  6) the sport car has a greater change in velocity upon impact.
  7) they both have equal momentum.

[FergA]

Answer to Question 1

Answer: 1, 5

Answer to Question 2

Answer: 2, 5

[ts19998]

Excellent

[JCABRERA33]

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