Please help al these questions

Q: Calculate the uniform acceleration of the block 12. a. If a tennis ball hits a racket with 40N of force to the right, what is the force of the racket on the ball? b. A bat hits a baseball with 1800N of force to the left. How much force does the baseball exert on the bat? c. A person's weighs 100 pounds on the surface of the earth. What is the corresponding force pair? d. A rey strikes the windshield of a bus. The rey hit the bus and the bus hits the rey. Which of the two forces is greater: the force on the rey or the force on the bus? 13. Explain the process of walking forward/backwards on the basis of Newton's third law. TYPES OF FORCES 1. Consider a person of mass 68 kg on the surface of the earth. . What is the weight of the person ? Use Newton's Universal Law of Gravity k... Use the equation Where G= 6.67xlO'll Earth mass = 5.972x102\" kg Earth radius = 6.371x106 m b. Repeat question using the equation W=mg 2. Calculate the gravitational force between earth and the moon. Look up relevant masses and distances. 3. What is a Normal force? 4. Explain the origin of friction. 5. Describe the difference between static and kinetic friction. 6. A 10 kg block is initially at rest. A 23.5 N is applied to the right and the block is observed to be at rest. 9 Q: Is friction acting on the block? Explain. Q: Calculate the friction force acting on the block. Is it static or kinetic? Q: Draw a FBD of the block Q: Calculate the weight of the block. Q: Calculate the normal force acting on the block 7. A 10 kg block is initially at rest. A 23.5 N is applied to the right and the block is observed to be moving with Mimi Q: What is tlmxplain your