In shot put, the shot is put (thrown) from above the athlete’s shoulder level. Is the launch angle that produces the greatest range 45°, less than 45°, or greater than 45°?

The launch angle that produces the greatest range is 45°

Explanation:

Range is given by u^2sin(2A)/g

The range is maximum when A is 45°

Rmax = u^2sin90°/g = u^2/g

If A is less than or greater than 45°, the range would be lesser

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.