PLEASE ANSWER Q. 7. Force is applied on an object of mass 2 Kg at rest on a frictionless horizontal surface as shown in the graph. The speed of the object at t=1 s will be (1) 7.5 m/s (2) 12.5 m/s (3) 10 m/s (4) 25 m/s Share with your friends Share 4 Sarbasree answered this ans option 3 impulse= ft = mv for t =1s ,f = 20N so speed = 10m/s -12 View Full Answer