1. The problem statement, all variables and given/known data A block of mass of 60kg is at rest on a smooth horizontal surface and is then pushed with a constant force of 126N for 10 seconds. Ignoring friction and air resistance; A. calculate the acceleration of the block during the 10 seconds B. calculate the velocity after 10 seconds. 2. Relevant equations F=ma Impulse=Force x time Ns=mv-mu v=u+at? 3. The attempt at a solution Part A: My first attempt A: 126x10=1260 1260/60 = 21ms^2 My second attempt after think i made it more complicated is: F=ma 126=60xa a=126/60=2.1ms^2 Part B: First attempt Ns=mv-mu 1260=(60xv)-(60-0) 1260+60=60xv 1320=60xv v=1320/60= 22ms Second Attempt: 126x10=1260 1260/30=10.5 Further Discussion: I am assuming from the question that when they say "calculate the velocity after 10 seconds" they mean the final velocity (v)? If so then couldn't I use the motion equation v=u+at to find Part B if I know that Part A is right?