3. How are force and acceleration related based on your knowledge of Newton's laws? 4. The slope of the graph of force versus acceleration is 0.46. What would you expect it to be? What is the percentage error in the lab? 5. Calculate the expected acceleration based on each force. Put it in the indicated column in the data table. Show a sample calculation here. Problems (40pts total) Answer ALL questions 1. During a test crash, an airbag inflates to stop a dummy's forward motion. The dummy's mass is 75 kg. If the net force on the dummy is 825 N toward the rear of the car, what is the dummy's deceleration? (4pts) WA 2. A 4kg object is experiencing forces according to the FBD to the right. Force A = 10N, B = 2N, C = 10N, D = C 12N, and E = 2N. Be sure to write the equation, plug in numbers to get the answer. a. What is the total force in the horizontal? How is it moving? ( 6 pts ) What is the total force in the D vertical? How is it moving?(6pts) c. If the object is moving with a constant speed of 3m/s, what additional force is needed? In which direction? (6pts) LINEAR 4-range 0.604000000 2.013333333 m/s/s 3. A 20 kg wagon experiences a horizontal force of 64N. * 2. mx + b 1 0.4615 a. What support force is acting on the wagon?(6pts) b: 1:154e-10 RMASE Q b. What is the acceleration of the wagon if we can ignore friction. (6pts) c. If we measure an acceleration of 2m/s/s, what force of friction acts?(6pts) 4Lab (30pts, 6pts each) Answer ALL questions A group did a lab to investigate how the force affected the acceleration. They used a 0.5kg fan cart on a frictionless track. The fan had 3 settings. They put the fan strength on the lowest setting and used a force probe to measure its strength. Then they repeated for the other two settings. Next for each fan setting, they sent the cart down the track and used a motion detector to measure its acceleration. The data they collected is below: acceleration Force trial 1 trial 2 trial 3 average calculated Z m/s/s m/s/s m/s/s m/s/s m/s/s 0.3 0.66 0.69 0.65 1.54 1.61 1.5166667 IN 2.2 2.3 2.1666667 1. How do you get the acceleration from a motion LINEAR x detector? 604000000 - (N) 03104 2.013333333 m/s/s 04615 b. 1.154e- 10 2. Based on the data, how are 08 18 the force and acceleration acceleration (m/s/8) related? Are they directly or inversely proportional? How do you know? N