Abat strikes a 0.145-kg baseball. just before impact, the ball is traveling horizontally to the right at 35.0 m/s ; when it leaves the bat, the ball is traveling to the left at an angle of 33.0 ∘ above horizontal with a speed of 59.0 m/s . the ball and bat are in contact for 1.69 ms .
part a
find the horizontal and vertical components of the average force on the ball. let +x be to the right and +y be upward

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?