Question

4. A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of equal mass mo a velocity of -2.0 m/s. What is the velocity of the yellow ball after the collision? (a) +3.0 m/s (b) zero (c) +5.0 m/s (d) +2.0 m/s 5. Suppose a satellite were orbiting the Earth just above the surface. What is its centripe (a) equal to g (b) smaller than 9 (c) larger than 9 (d) Impossible to say without knowing the mass.

Answer 1

Page No. Ana y U30ms, -2mls V H means So head on Ceo uision is happening 1s porpecty elastic collisfen ie 3+V,-2+V (. _hy conservatibn of momentum daw m,utmUa m,VItmaV2 mas ot both balls 's Same So mu,tmu m Vtm 3+ C2 Vi+V2

Page No Date add eguation ca2 andl (3) 2-Vi-5 V-VV2S+1 Speed of yellow ball after couision niu be +3 m1s aprion CA is comect Ans. a Quetion is not combalete jiven tt 11 f in guarton ittscemtripetal accetoation then Ang will be Ca to eal a in question it is centapetal force" then ans wer wi be (d became we need mas to et torte can check whather it is arceleralton Now Lou Tor centrpetal 2ceelergon Ans ay for centapetal foree Ans. (D)
Thank you so much for 2nd question....if is is centripetal force then answer will be D) & if it is centripetal acceleration then answer will be A)