momentum - Calculating force of impact

Since $\text{force = mass}\times\text{acceleration}$,

1. 
   

   is it right to say that an object traveling at a high constant velocity (zero acceleration), exerts zero force upon impact with a stationary object?

   
   


2. 
   

   I understand that upon impact, the projectile decelerates rapidly from initial velocity down to zero. Could force then be computed using integrals and differential equations?