A golfer strikes a golf ball of mass 0.05 kg, and the time of impact between the golf club and the ball is 1.0 ms. If the ball acquires a velocity of magnitude 70 m/s, calculate the average force exerted on the ball.

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)