Two billiard balls A and B, each of mass 50g and moving in opposite directions with speed of 5m s-1 each, collide and rebound with the same speed. If the collision lasts for 10-3 s, which of the following statements are true?
(a) The impulse imparted to each ball is 0.25 kg m s-1 and the force on each ball is 250 N.
(b) The impulse imparted to each ball is 0.25 kg m s–1 and the force exerted on each ball is 25 × 10-5 N.
(c) The impulse imparted to each ball is 0.5 Ns.
(d) The impulse and the force on each ball are equal in magnitude and opposite in direction.
Two billiard balls A and B, each of mass 50g and moving in opposite directions with speed of 5m s-1 each, collide and rebound with the same speed. If the collision lasts for 10-3 s, which of the following statements are true?
(a) The impulse imparted to each ball is 0.25 kg m s-1 and the force on each ball is 250 N.
(b) The impulse imparted to each ball is 0.25 kg m s–1 and the force exerted on each ball is 25 × 10-5 N.
(c) The impulse imparted to each ball is 0.5 Ns.
(d) The impulse and the force on each ball are equal in magnitude and opposite in direction.
-
1 Answer
-
This is a Multiple Choice Questions type Questions as classified in NCERT Exemplar
Answer- c, d
Explanation – m1=m2 = 50g= 1/20kg
Initial velocity u1=u2= 5m/s
Final velocity v1=v2= -5m/s
Time duration = 10-3s
Change in linear 1momentum = m (v-u)= 1/20 (-5-5)=-0.5N-s
Force = impulse /time=0.5/10-3= 500N
So impulse and force are opposite in directions.
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 688k Reviews
- 1800k Answers