1. The problem statement, all variables and given/known data A projectile of mass 1 kg is launched from ground level toward the east at 200 metres per second, at an angle of pi/6 to the horizontal. A northerly win applies a force of 2 newtons to the projectile. Find the location of the projectile and its speed at impact. 2. Relevant equations I have to use calculus and derivatives. 3. The attempt at a solution Since the mass is 1 kg, the force is equal to the acceleration (F= m a). If east is X-axis, then north is Y-axis and gravity acts in the Z-axis. So, a=(0 i , 2 j , -9.81 k). This is where I'm stuck. I don't know how to proceed. Please help. Thanks.