A golf pro places a ball at rest on the tee, lines up his shot, draws back his club, and lets one rip. During the contact of the golf club with the golf ball, the force of the club on the ball is ____ the force of the ball on the club and the acceleration of the club is ____ than the acceleration of the ball. a. greater than, greater than b. greater than, equal to c. greater than, less than d. less than, less than e. less than, equal to f. less than, greater than g. equal to, equal to h. equal to, greater than i. equal to, less than

3. The masses of crates A and B are 50 and 30 kg, respectively. The coefficient of static friction between the crates and the floor is 0.3 and coefficient of kinetic friction is 0.22. Crates are initially in rest, but starting from t = 0, they will be pushed as pictured by a horizontal force P. Calculate the velocity of the crates after t = 5 s, if a) P = 200 N b) P = 500 N c) P = 40t2 A ther B

A freight train consists of an engine and several identical cars on a straight, level track. Which of the following statements are true? A. If the train is moving at constant speed, the engine must be pulling with a force greater than the train's weight. B. If the train is moving at constant speed, the engine's pull on the first car must exceed that car's backward pull on the engine. C. If the train is moving at constant speed, the engine's pull must be equal to the force of friction. D. If the train is coasting, its inertia makes it slow down and eventually stop

1. A ping-pong ball has a weight of 0.50 N. While in contact with a paddle the paddle exerts a force of 7.8 N at 29° above the horizontal. Determine the net force acting on the ball at this instant.