B. Identify six action-reaction pairs (ARPS) in the situation illustrated below, where the tank is pulled by soldiers using a rope. Spell-out (use words not initials) the subscripts using the F notation. ARP 1: ARP 2: ARP 3: ARP 4: ARP 5: ARP 6:

A 1370 kg jeep traveling at 19 m/s can be stopped in 24.0 s by gently applying the brakes. a) What is the average force exerted on the jeep in this case? b) If the driver slams on the brakes, the jeep stops in 2.10 s. What is the average force exerted on the jeep in this case? c) How much time will it take it stop if the driver coasts and lets a 300 N friction force stop the car?

v: Consider the following equation: GMm F (1) R2 a) Define the parameters in Equation 1. b) What does Equation 1 mean? c) Combine Equation 1 and Newton's second law of motion. What does the result tell you?

Consider two cars, a 1,700 kg BMW and a 1,500 kg Mercedes-Benz. The BMW is speeding along at 120 km/h and the Mercedes-Benz is going half the speed at 60 km/h. If the two cars brake to a stop with the same constant acceleration, a. Is the amount of time required to come to a stop influenced by their initial velocity? Explain your answer using diagrams, equations, or any explanatory rules/principle b. Is the distance travelled prior to stopping influenced by their initial velocity? Explain your answer using diagrams, equations, or any explanatory rules/principles

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

60° 30° A 50 kg truck engine is lifted using the setup shown. Assuming that the pulleys are frictionless, What force P must be applied to the cable to hold the engine in the position shown with d= 1m? (Hint: because the frictionless pulleys, the tension in the cable will be uniform through out the whole length of the cable.) 2. 3. d 30 kg 600 N/m A 3m 3m Determine the reactions at A and B. 50 kg

b. While you are on your way coming to lectures you met Mr. Coffie and his wife; Mr. Coffie has a body mass of 100kg, the body mass of Mrs. Coffie is 50kg more. Assuming these two individuals have the same line of application; draw their forces in the following scenarios: 1. Mr. Coffie and Mrs. Coffie are moving in the same direction. ii. Mr. Coffie and Mrs. Coffie are moving in the opposite direction. ii. What steps are you going to use to determine the magnitude of their resultant when they are moving in the same direction? iv. What steps are you going to use to determine the magnitude of their resultant when they are moving in the opposite direction?

Solutions to Lareo. O trig-hunetions-mo... 1220018-Ch02,0... a Playing a Oame- S Solutions to McDo.. Open Response #1 Odessa, the lobster, decides to go skydiving. She is approximately 23 kg, parachute included. When she opens the parachute, she begins accelerating upwards at 2.5m/s/s. Open Response #1: What is the force of gravity acting upon Odessa? * Your answer Open Response #1: What is the net force acting upon Odessa? * Your answer This is a required question Open Response #1: What is the force of the air resistance acting upon Odessa? * Your answer 1l 00 80 47 77 FS F6 13 14 %23 4. 6. 7 09. E R Y D F H. K V M B.

(The complete question is in the picture) Your professor kicks a soccer ball from the ground with mass m giving it an initial velocity of v0 and reaching a certain maximum height. You, wanting to get higher grades by showing off, kicks the ball and gives it an initial velocity that is double your professor’s shot. What is the maximum height of your shot compared to your professor’s? A. Your shot is 4 times higher than your prof’s shot. B. Your shot is 1/4 times higher than your prof’s shot. C. Your shot is 8 times higher than your prof’s shot. D. Your shot is 2 times higher than your prof’s shot.

d. Force is a vector quantity and thus has both a magnitude and a direction. A vector can be represented graphically by a line drawn to scale in the direction of the line of action of the force. To distinguish between vector and scalar quantities, various ways are used. Identify and explain threeof these ways.