ycla3. A car travelling at 122 km/h strikes a tree, the front end of the car compresses, and the drivercomes to rest after traveling 0.558 m. What was the average acceleration of the driver duringthe collision? Express your answer in terms of g's (1.00g = 9.80 m/s').g's%3DGiven the fact that humans can withstand a maximum of 25 g's for a short time without brainyinjury, what would the condition of this driver most likely be? Impact khll

Average acceleration (a) : According to newton’s equation of motion: v2-u2=2as Where v= final…

Answered: yclq 3. A car travelling at 122 km/h…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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9. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. The vertical motion of mass A is defined by the relation x= cos(10) - 0.1sin(104), where x and tare expressed in mm and seconds, respectively. Consider t= 0.5 s. A Determine the maximum velocity and acceleration of A. The magnitude of the maximum velocity and acceleration of A are mm/s, and mm/s2, respectively. GWMW
10. The position of a 25 kg robot that is moving along a straight track in the x direction is given by the function x(t) = (0.002 m/s4)+4+(-0.08 m/s³)t³+ (0.8 m/s²)t² between the times t = 0 and t = 20s. This function is shown in the graph below. canondent (a) Describe what is going on near t = 10 s. 11. (b) What is the average speed of the robot during the first 10 s? 12. (c) What is the average speed of the robot over the entire 20 s? Tuo tuomorr 1 66 What is the velocity of the ob- ject shown in the motion diagram to the right position (m) if the total time interval recorded was 4.0 s 201 and the vertical lines mark off 4.0 m intervals? 20 (The final position is where the large mark is. The small dot at the other end shows where it started. The small dots show its prior posi- tions at half-second intervals.) 15 -10 5 0 5 time (s) (a) What is the average speed of the athlete over one full repetition of this exercise? leverer to bu(b) What is the average velocity of the athlete over…
A stationary soccer ball of mass m = 0.52 kg is booted with a constant force of F = 22 N. The man's foot is in contact with the ball for t = 0.46 s. a. Write an expression for the speed of the ball, vi, as it leaves the man's foot. b. What is the velocity of the ball right after contact with the foot of the man? c. If the ball left the man's foot at an angle θ = 45° relative to the horizontal, how high h did it go in meters?
2. A 50.0 object is moving at a velocity of 30.0 m/s must come to a stop in 2.00m. How much force is required to bring it to a stop?
46. Roller coasters use some of the most sophisticated technology. Safety is a big part of that technology. One of the reasons roller coasters require such sophisticated safety computers is for insurance and legal purposes. During the 1920s, 30s and 40s, roller coasters had a reputation of being wild, rough and very dangerous. They pulled up to 12 Gs (about 120 m/s²), which often snapped peoples` necks! They also tended to derail and ram into each other. Modern day coasters are practically run by computers! Computers are so important for the safety of roller coasters, they make riding a coaster safer than walking across the street! Computer calculations make it possible to dip, loop and nearly scare you to death without harming you. In testing a model of a looping roller coaster, an engineer observes that the current design would result in a zero normal force acting on the passengers at the top of the loop. (a) If the radius of the loop is 4.0 m, what is the speed of the model coaster…
A 191.5-kg astronaut and equipment move with a velocity of 2.03 m/s toward an orbiting spacecraft. How long will the astronaut need to fire a 100.0-N rocket backpack to stop the motion relative to the spacecraft? %3D
Question 12, Physics - equation sheet attached
3a A 0.2 kg mass is attached to a spring that is compressed against a heavy brick. The mass begins at the origin of a coordinate system as shown (Note that +y is pointing down). At t = 0s, the spring is released and the mass and brick are allowed to fall. The mass accelerates at 3.2 m/s² due to the spring and 9.8 m/s² due to gravity. +x +y What is the displacement vector of the mass after 2.5 s? Give both components below in m. 2: Enter answer here · 3bĵ: Enter answer here
A 100 car train is pulled by a 200T locomotive. Assume that the cars are all identical and weigh 100T each. The train accelerates from 0 - 10m/s in 200s, and we ignore friction and air resistance. Roughly sketch this train as a single object (you don't have to sketch all 100 cars). - What is the mass of the entire train (in Tonnes and kg)? - What is the train's acceleration in m/s^2? - What is the (tractive) Force supplied against the rails by the locomotive in N and kN to accelerate the train? - What is your day of birth (dd)? This is your car number counting back from the locomotive. - Draw the FBD for your single car on this train while it is accelerating, and briefly explain forces. - Find weight and normal force (magnitude and direction) for your car, add these to the FBD. - Calculate the forward coupler tension (magnitude and direction for the attachment point of your car to the forward part of the train pulled by the locomotive) for your car, add to the FBD, and explain.
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14. A 3 kg shopping cart experiences a 12 N during a cart race. If the cart accelerates for 10 s, how far will it have traveled in this time?
9. Your mass is 63.4 kg, and the sled s mass is 25.0 kg. The sled is moving by itself on the ice at 3.19 m/s. You parachute vertically down onto the sled, and land gently. What is the sled s velocity with you now on it? 1.04 m/s 0.90 m/s 0.72 m/s 1.17 m/s

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