A- When a person of body mass 79 kg leans against the wall with 20% of that person's body weight, with what force in N does the wall push back against the person to two significant figures?

B- On a bicycle, you collide with a curb for 2.0 s, reducing your momentum from 735 kg m/s to zero, what was the force of the curb on the bicycle in N (put in themagnitude of the force, a positive number) to two significant digits?