Physics Momentum quiz

sliding frictionless + 10 pigeons = ?

decreasing velocity

Inelastic collision w Ally, KE after collision?

decreasing

Golf ball dropped from rest. Dropped from height 1.3 m A.) what velocity B.) what is rebound velocity? C.) What impulse?

A.) 1/2at² plug —> (0)+(9.8)(t)

B.) same w (x)

C.) mfmf-mimi

(add)

0.038 kg bullet enters 3.2 kg watermelon ( what was entry speed of the motion?

mimv+m2v2=m3v3

(bullet kg)(vb)+(watermelon kg)(0)=(watermelon +bullet kg)(speed given)

Tim driving + deer A.) crash +angle fast deer was going? B.) final velocity after collision?

A.) draw triangle use tan

(car mass)(velocity) =num under tan

num after tan/ deer mass

B.) add masses of car +deer

num after tan/ mass of car+deer

amusement park bumper car moving elastically off mass bumper car rest. moves velocity of.. A.) what velocity of 2nd vehicle? B.) What kind collision?

A.) (1st bumper mass)(velocity)+(2nd bumper mass)(velocity(0))=(1st mass) (given velocity) +(2nd mass)(v2f)

B.) Elastic collision

Gold ball mass thrown at billbard ball one to the right and one left. What are their velocities after elastic collision?

(gbm)(gbv)+(bbm)(-bbv)=(gbm)(vf)+(bbm)(v2f)

add both gb +bb velocities

add (added velocity num) to the new equation =vf

vf + added velocity num = ans