An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s and comes to a full stop after compressing the padding and his body 0.150 m. (a) How long does the collision last? s (b) What is his deceleration? m/s2

An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s and comes to a full stop after compressing the padding and his body 0.150 m. (a) How long does the collision last? s (b) What is his deceleration? m/s2

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 33PE: An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s...

See similar textbooks

Related questions

Q: A rocket accelerates at a rate of 25m/s^2 for 1 min. What is the speed of the rocket after 1 min. of…

A: The expression from kinematics, v=ut+12at2

Q: A person falls from the top of a tall building. To save the person, Spiderman launches himself…

A: Let spiderman take x second time to catch up to the falling person after his launch. We know that…

Q: At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.44…

A: The player should wait until ball reaches maximum height.The time to reach maximum height of the…

Q: A car traveling at 20 m/s when thee driver sees a child standing in the road. He takes 0.80 s to…

Q: 21. A 50.0-g Super Ball travel- ing at 25.0 m/s bounces off a brick wall and rebounds -3- Figure…

A: Given mass of super ball = m = 50.0 g = 0.050 kg initial velocity of super ball = u = 25.0 m/s…

Q: A car in stop-and-go traffic starts at rest, moves forward 25min 8.0s, then comes to rest again.What…

A: The distance covered by the car in last 2.0 seconds can be calculated using given steps.

Q: You are driving through town at 10.0 m/s when suddenly a ball rolls out in front of you. You apply…

Q: A snail slugs along at .005 m/s and accelerates at .005 m/s2 for 3 seconds. What is the snails final…

A: Initial velocity, u = 0.005 m/s Acceleration, a = 0.005 m/s² Time, t = 3 s Snails final velocity, V…

Q: An unwary football player collides with a padded goalpost while running at a velocity of 8.50 m/s…

A: Given: The intial velocity of the player is 8.5 m/s. The final velocity of the player is 0 m/s. The…

Q: On takeoff, a rocket accelerates from rest at a rate of 48 m/s2 for exactly 1 minute. The rocket's…

A: Given Initial velocity u = 0 Acceleration a = 48 m/s2 Time t = 1 min = 60 sec

Q: You are driving your new sports car at a velocity of 90 km/h, when you suddenly see a dog step into…

A: Distance travelled before stopping v2=u2+2ass=v2-u22a

Q: A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt…

Q: In this first example of constant accelerated motion, we will simply consider a car that is…

Q: How long does it take for the car to go from 85 m/s to 45 m/s?

A: Initial speed , u = 85 m/s Final speed , v = 45 m/s Acceleration , a = -9 m/s2

Q: If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and…

A: It is given that,

Q: If a body is accelerating at a = 5t² - 2t where t is in seconds, determine the average acceleration…

Q: A car traveling at 20 m/s when the driver sees a child standing in the road. He takes 0.80 s to…

A: The equation of motion we use to solve this is v2-u2 = 2as, where v = the final velocity u = the…

Q: Consider a car moving in the positive direction with an initial velocity of 33 m/s slows down at a…

A: Given: Initial velocity of the car = 33 m/s Acceleration = - 3.5 m/s2 (Negative acceleration means…

Q: A runner in 140-m race constantly accelerates for the first 40 m. and then runs with a uniform…

Q: A car moving initially at 55 km/h[S] experiences an acceleration of 10 km/h/s[S] for 4.8 s. What is…

A: Given data: Initial velocity (V0) = 55 km/h [S] Acceleration (a) = 10 km/h/s [S] Time (t) = 4.8 s…

Q: A motorcycle reaches a velocity of 31m/s after accelerating at a constant rate of 4.44m/s2 for 3.34…

A: Let the motorcycle's final velocity is denoted by v, acceleration is denoted by a, and time is…

Q: fa stone is thrown straight upward with the initial velocity v20 mys what is the velocity of the…

A: Given data: Initial velocity of stone is, u=20 m/s. Time interval is, t=24 s.

Q: The acceleration of a car moving along a straight line is given by the relation [ a = kt ]. The…

A: Given:- A car moving in the straight line as the acceleration of the car is given as a = kt2 The…

Q: A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The…

Q: A train is accelerating at a rate of 2 m/s2. If its initial velocity is 20 m/s. what is its velocity…

A: Initial velocity, u = 20 m/s Acceleration, a = 2 m/s2 Time, t = 30 s Applying the first equation…

Q: A continuously accelerating car starts from rest as it zooms over a span of 100 m. If the final…

A: The expression from kinematics, v2=u2+2as

Q: A body has an initial velocity of 45km/h and is accelerated uniformly at 2m/s2 until its velocity is…

A: Given data: Initial velocity u =45 km/h Acceleration a=2 m/s2 Final velocity v=72 km/h Time…

Q: A 500kg car moving to the north at 45m/s crashes head-on into a 600kg car that is moving the south…

Q: A locomotive is accelerating at 1.6 m/s2. It passes through a 20.0-m-wide crossing in a time of 2.4…

A: Using equation of motion, v=u+at Using the expression for average speed, vavg=dtv+u2=dtv+u=2dt

Q: At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 5.1…

A: The minimum time that a player should wait can be calculated as follows:Given:Initial velocity of…

Q: The average speed of a car is 27 m/s during the first 10 seconds of acceleration. What is the…

A: Given: The average speed of the car is 27 ft/s. The time interval is 10 s. The acceleration of the…

Q: The brakes of a car can provide a maximum deceleration of around x m/s2. If a car is traveling 100 m…

A: using equations of motion v2 -u2 = 2as therefore acceleration a = (v2 -u2)/2s ----(1) also…

Q: A sprinter starting from rest on a straight and level track is able to achieve a speed of 17 m/s in…

A: The average acceleration can be given by aavg=v-ut

Q: A car starts from rest and accelerates uni- formly for 15 s. The distance traveled in the entire 15…

A: The expression to solve for the distance travelled by the car is as follows: s=ut+12at2…

Q: Q11. The position of an object moving along an x-axis is given by x = 3 + 12t -t', where x is in…

Q: You slam on the gas of your racecar and you accelerate at 12 m/s² from rest. How long will it take…

A: Given data The acceleration of the race car a=12 m/s2 The initial velocity is u=0 m/s The final…

Q: As relay runner A enters the 73-ft-long exchange zone with a speed of 30 ft/s, he begins to slow…

A: Given: Initial velocity of runner A = 30 ft/sec Initial velocity of runner B = 0 ft/sec Exchange…

Q: A rocket, initially at rest on the ground, accelerates upward with a constant acceleration of 94.0…

Q: A car has a velocity of 60 m/s and after the time 8 sec what is the final velocity of ther…

Q: A car traveling at a speed of 30.0 m/s encounters an emergency and comes to a complete stop. How…

A: Answer = ( t = 7.5s )

Q: The acceleration of a free fall is about 10m/s2 . Why does the seconds until appear twice?

A: We know, Velocity is rate of change of Displacement.and Acceleration is rate of change of Velocity.

Q: While entering a freeway, a car accelerates from rest at a rate of 2.4 m/s2 for 15 s. What is the…

A: We can find out the velocity by a simple mathematical relation which is given by, v=u+at where v is…

Q: The average acceleration of a moving car is 12 m/s^2. If the car moves from with an initial velocity…

A: Hi. as you have posted multiple questions and have not specified which question needs to be solved,…

Q: Abante Atras.The figure to the right shows the veloc- ity versus time graph of a rocket. What is the…

A: The average acceleration (aav) of a body or an object is defined as the change of velocity of the…

Q: A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration…

A: Given Initial speed u=om/s acceleration a=50m/s2 t=6.70s

Q: At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.92…

Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s and comes to a full stop after compressing the padding and his body 0.150 m.

(a) How long does the collision last?
s

(b) What is his deceleration?
m/s²

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s and comes to a full stop after compressing the padding and his body 0.350 m. (a) What is his deceleration? (b) How long does the collision last?
Consider a grey squirrel falling out of a tree to the ground. (a) If we ignore air resistance in this case (only for the sake of this problem), determine a squirrel's velocity just before hitting the ground, assuming it fell from a height of 3.0 m. (b) If the squirrel stops in a distance of 2.0 cm through bending its limbs, compare its deceleration with that of the airman in the previous problem.
Kathy tests her new sports car by racing with Sian, an experienced racer. Both start from rest, but Kathy leaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.50 m/s2, while Kathy maintains an acceleration of 4.90 m/s2. Find (a) the time at which Kathy overtakes Stan, (b) the distance she travels before she catches him, and (c) the speeds of both cars at the instant Kathy overtakes Stan.
Professional Application Dr. John Paul Stapp was U.S. Air Force officer who studied the effects of extreme deceleration on the human body. On December 10, 1954, Stapp rode a rocket sled, accelerating from rest to a top speed of 282 m/s (1015 km/h) in 5.00 s, and was brought jarringly back to rest in only 1.40 s! Calculate his (a) acceleration and (b) deceleration. Express each in multiples of g (9.80 m/s2) by taking its ratio to the acceleration of gravity.
A motorist drives along a straight road at a constant speed of 15.0 m/s. Just as she passes a parked motorcycle police officer, the officer starts to accelerate at 2.00 m/s2 to overtake her. Assuming that the officer maintains this acceleration, (a) determine the time interval required for the police officer to reach the motorist. Find (b) the speed and (c) the total displacement of the officer as he overtakes the motorist.
An ice sled powered by a rocket engine sum from rest on a large frozen lake and accelerates at + 40 ft/s2. After some time t1, the rocket engine is shut down and the sled moves with constant velocity v for a time t2. If the total distance traveled by the sled is 17 500 ft and the total time is 90 s. find (a) the times t1 and t2 and (b) the velocity v. At the 17 500-ft mark, the sled begins to accelerate at 20 ft/s2. (c) What is the final position of the sled when it comes to rest? (d) How long does it take to come to rest?
An Olympic-class sprinter starts a race with an acceleration of 4.50 m/s2. (a) What is her speed 2.40 s later? (b) Sketch a graph of her position vs. time for this period.
A bullet in a gun is accelerated from rest from the firing chamber to the end of the barrel at an average rate of 6.25 × 105 m/s2 for 8.3 × 10-4 s. What is the gun’s muzzle velocity (that is, the bullet’s final speed), in meters per second?
An unwary football player collides with a padded goalpost while running at a velocity of 8.50 m/s and comes to a full stop after compressing the padding and his body 0.450 m. (a) How long does the collision last? ________ s(b) What is his deceleration? ________m/s2
While entering a freeway, a car accelerates from rest at a rate of 2.4 m/s2 for 15 s. What is the cars final velocity in meters per seconds?
Consider a car moving in the positive direction with an initial velocity of 33 m/s slows down at a constant rate of -3.5 m/s2. What is its velocity after 6 seconds of deceleration? The velocity after 6 seconds of deceleration is ? m/s.
A sprinter in the 100 m dash accelerates for 1.5 seconds when the starting pistol goes off, before reaching the maximum speed of 9.1 m/s. (Keep in mind the world record for maximum speed is 10.49 seconds) A) What distance does she cover while she accelerates? B) What's her race time?