Question

29. A 2.0-kilogram body is initially traveling at å az ?quy velocity of 40. meters per second east. If a constant force of 10. newtons due east is applied to the body for 5.0 seconds, the final speed of the body is A) 15 m/s B) 25 m/s C) 65 m/s D) 130 m/s Vianowist Fapp: IONE Fret-ma

Answer 1

Solution: Given data: mass of body (m) = 2-0 kg. Initial velocity (u) = 40 mis east Force on body (F) = 10 N east force is in the direction of initial velocity, so acceleration will be Hive. F = ma BD a= E Put values :> a = 10 or a = 5 m/s2 Also given Time (t) = 5.0 sec. Apply 1st eq% of motion v=ultat where v= final velocity put all values U = (40mg) +(59) (58) V = 4omis +25 mis v = 65 m/s s option (c) 65 mls Answer