Weight in air(N)=1.2 apparent weight (N)=1.0 what is the buoyant force (N)

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

Why should seat belts not be mandatory quick plz

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =