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- 2. A 600,000 kN ocean liner has an initial velocity of 0.9 m/s. Neglecting frictional resistance of water, determine the time required to bring the liner to rest, by using a single tugboat, which exerts a constant force of 230 kN.5. A box falls off the tailgate of a truck and slides along the street for a distance of 62.5 m. Friction decelerates the box at 5.0 m/s. At what speed was the truck moving when the box fell?Which of the following situations would result in a greatest impact force: a. the crash is head-on between two identical cars both moving at 30mph and b. the crash is head-on into a stationary brick wall with a velocity at 30mph? Explain whhy.
- 1.supposed that the body with 2 kg has an initial velocity of 10m/s and is then pulled 4 meters by a force of magnitude 25N in the direction of the initial velocity, what is its final velocity?A 3209.62 kg car crashed to a 513.73 lbs motorcycle which is at rest, throwing it to accelerate at 7.19m/s2. If the car was pushed back with a distance of 27.56m, how much farther is the motorcycle from the crash site? What is the final velocity of the car upon being pushed back that is caused by the crash? use 1kg=2.20lbs2. A person with a mass of 65 kg travels through a snow using snow board. He is skiing for 20s and a constant friction force of 25 N acts on him. What is his change in velocity?
- Which of the following situations would result in a greatest impact force: a. the crash is head-on between two identical cars both moving at 30mph and b. the crash is head-on into a stationary brick wall with a velocity at 30mph? Explain why.During a head on collision, the passengers in the front seat of a car accelerate from 13.3m/s to rest in 0.10s. The driver of the car held out their arm to stop their 25kg child from smashing into the dashboard. What force in pounds (1N = 0.225lbs) is needed to keep the child from moving?A 1100 kg car accelerates at 3.40 m/s2. If the car accelerates from rest for 30 seconds, what is the resulting velocity?
- 1. In 1992, a 14-kg meteorite struck a car in Peekskill, NY, leaving a 20-cm-deep dent in the trunk. If the meteorite was moving at 500 m/s before striking the car, what was the magnitude of its acceleration while stopping?A 2500kg car traveling to the north is slowed down uniformly from an initial velocity of 20m/s by a 6250 N braking force acting opposite the car's motion. (Hint: Since the force is going opposite of the car, then the force must be negative). How long does it take for the car to come to a complete stop? GU E SSycla 3. A car travelling at 122 km/h strikes a tree, the front end of the car compresses, and the driver comes to rest after traveling 0.558 m. What was the average acceleration of the driver during the collision? Express your answer in terms of g's (1.00g = 9.80 m/s'). g's %3D Given the fact that humans can withstand a maximum of 25 g's for a short time without brainy injury, what would the condition of this driver most likely be? Impact khl l