I need some practice with these problems in Physics. I'm taking some extra work so I can study so I'm using a few practice problems. Please show the work so I can study it!! Please include all the work states. The photos are where the questions are Refer to the photos below to answer, thanks!!

4. The driver accelerates a 240.0-kg snowmobile, which results in a force being exerted that speeds up the snowmobile from 6.00 m/s to 28.0 m/s over a time interval of 60.0 s. a. Sketch the event, showing the initial and final situations. b. What is the snowmobile's change in momentum? What is the impulse on the snowmobile? c. What is the magnitude of the average force that is exerted on the snowmobile? 5. CHALLENGE Suppose a 60.0-kg person was in the vehicle that hit the concrete wall in Example Problem 1. The velocity of the person equals that of the car both before and after the crash, and the velocity changes in 0.20 s. Sketch the problem. a. What is the average force exerted on the person? b. Some people think they can stop their bodies from lurching forward in a vehicle that is suddenly braking by putting their hands on the dashboard. Find the mass of an object that has a weight equal to the force you just calculated. Could you lift such a mass? Are you strong enough to stop your body with your arms?1. A compact car, with mass 725 kg, is moving at 115 km/h toward the east. Sketch the moving car. a. Find the magnitude and direction of its momentum. Draw an arrow on your sketch showing the momentum. b. A second car, with a mass of 2175 kg, has the same momentum. What is its velocity? 2. The driver of the compact car in the previous problem suddenly applies the brakes hard for 2.0 s. As a result, an average force of 5.0 x 105 N is exerted on the car to slow it down. a. What is the change in momentum, or equivalently, what is the magnitude and direction of the impulse on the car? b. Complete the "before" and "after" sketches, and determine the momentum and the velocity of the car now