Multiple Choice
Alex throws a 0.15-kg rubber ball down onto the floor.The ball's speed just before impact is 6.5 m/s and just after is 3.5 m/s.If the ball is in contact with the floor for 0.050 s,what is the magnitude of the average force applied by the floor on the ball?
A) 60 N
B) 133 N
C) 30 N
D) 3.5 N
Correct Answer:
Verified
Correct Answer:
Verified
Q10: A 70-kg man is standing in a
Q11: A baseball infielder,mass 75.0 kg,jumps up with
Q12: A miniature,spring-loaded,radio-controlled gun is mounted on an
Q13: Lonnie pitches a baseball of mass 0.15
Q14: Popeye,of mass 70 kg,has just downed a
Q16: During a snowball fight,two balls with masses
Q16: In an inelastic collision between two objects
Q17: A 20-g bullet moving at 1000 m/s
Q18: A 75-kg swimmer dives horizontally off a
Q19: Two skaters,both of mass 75 kg,are initially