The Final Speed of Car, Aceleration of The Rock, Final Velocity & Mr. Colb’s Case Study - Mathematics Assignment Help

Assignment Task

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• A used car salesman claims his car is able to go from 0 to 75 km/min in 2.8 seconds. Convert the final speed into mi/hr. (1 inch = 2.54 cm)
• Problems 2 through 5 are related to the following situation: You drop a rock from the top of a cliff. The rock takes 7 seconds to reach the bottom.
• What is the initial speed of the rock?
• What is the acceleration of the rock, from problem 2, when it is half-way down the cliff?
• How fast is the rock, from problem 2, traveling when it hits bottom?
• What is the height of the cliff, from problem 2?
• Problems 6 – 8 are related to the following situation: You are trying to push a 70.0 kg crate out the back door. The force of friction between the crate and the floor is 275 N, and you push horizontally.
• How hard must you push to move the crate with a constant speed?
• If you push with a force of 380 N, what will be the crate’s acceleration?
• If her crate starts from rest, what will be crate’s final velocity if you push with a force of 380 N for 6 s?
• Problems 9 and 10 are related to the following situation: It’s a dirty little Menlo secret that every time the floors in Stent Hall are waxed, Mr. Colb likes to slide down the hallway in his socks. Mr. Colb weighs 950 N and the force of friction acting on him is 100 N.
• Calculate Mr. Colb’s acceleration down the hall.
• Oh no! There’s an open door leading nowhere at the end of the second floor hallway! Mr. Colb is traveling at 2.8 m/s when he becomes a horizontally launched projectile and plummets to the ground below (don’t worry, he lands on a pile of backpacks and only his pride is injured). If the window is 3.7 m high, calculate how far from the base of the wall Mr. Colb lands.
   

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