Dr. John Paul Stapp was a U.S. Air Force officer who studied the effects of extreme acceleration 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 in his direction of motion and (b) acceleration opposite to his direction of motion. Express each in multiples of g (9.80 m/s2) by taking its ratio to the acceleration of gravity.

Q: A motorist drives north for 35 minutes at 85 km/h and then stops for 15 minutes. He then continues…

A: Recall Average velocity=Total displacement/total time

Q: An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s…

A:

Q: A motorist drives north for 32.0 minutes at 80.5 km/h and then stops for 15.0 minutes. He then…

A: We know that:

Q: Modern oil tankers weigh over a half-million tons and have lengths of up to one-fourth mile. Such…

A: Given information:Distance required to come to rest (s) = 4.5 km = 4500 m.Time required to stop (t)…

Q: A bullet is fired through a wooden board with a thickness of 8.0 cm. The bullet hits the board…

A:

Q: A student drives 1.91 km due west to get coffee before class. The trip to get coffee takes her 7.00…

A:

Q: A student drives the 105-mi trip back to campus after spring break and travels with an average speed…

A: Given: Total distance of the trip = 105-mi, Average speed for the first part of the trip, v1 = 56…

Q: An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s…

A:

Q: Dr. John Paul Stapp was a U.S. Air Force officer who studied the effects of extreme acceleration on…

A: Given data: Initial speed is, u1=0 m/s                  (As sled starts from rest) Final speed is,…

Q: Over a time interval of 1.54 years, the velocity of a planet orbiting a distant star reverses…

A: GivenInitial velocity is Final velocity is Time interval is We have to find total change in velocity…

Q: The velocity of a particle moving along the x axis varies according to the expression νx = 40 - 5t2,…

A: Velocity of the particle is given as,

Q: An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s…

A: (a) From kinematics, the formula for the final velocity of the player be:

Q: Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency…

A:

Q: Two cars, A and B, are travelling in the same direction, although car A is 183m behind car B. The…

A:

Q: An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s…

A: Answer is uploaded in the 2nd step

Q: An aero-plane lands at a velocity of 670 m/s and has the variation of the acceleration by maximum…

A: initial velocity, u = 670 m/s  final velocity, v = 0  acceleration, a = - 5 m/s2

Q: a researcher observes a vehicle with an initial velocity of 14 m/s. the vehicle accelerated…

A: Equation of motion is given by

Q: An iceboat sails across the surface of a frozen lake with constant acceleration produced by the…

A: Given data:  Initial velocity (Vi ) = (2.69 î - 2.98 ĵ)m/s Time (t) = 3.00 s Final velocity (Vf) =…

Q: Over a time interval of 1.52 years, the velocity of a planet orbiting a distant star reverses…

A:

Q: An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s…

A: Given data:  Initial velocity (Vi) = 6.50 m/s Final velocity (Vf ) = 0 Compression (x) = 0.350 m

Q: During astronaut training, the person rides a simulated rocket, accelerating from rest to maximum…

A: X=16.34

Q: a certain car accelerates uniformly from zero to 20.6 m/s in 2.65 s. (a) What is the magnitude of…

A: Given data:  Initial velocity (v0) = 0 m/s Final velocity (v) = 20.6 m/s Time (t) = 2.65 s

Q: train is travelling with a velocity of 90 km/h. The brakes are applied at a rate of -0.4 m/s2.…

A:

Q: Usually, Tony travels to Bunbury from Perth city in 2.50 hours. One day he increases his average…

A: a) Given data: The time required to reach Bunbury from Perth is 2.5 hours at the initial average…

Q: A proton moves along the x axis according to the equation x = 54 t+ 11 t2, where x is in meters and…

A: Given data, Equation of movement of the proton (x)=54t+11t2 Time (t)=3.0 s

Q: Suppose a cyclist is going 20m/s (44mph) at the end of a race, and begins coasting after crossing…

A:

Q: An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s…

A: The acceleration of the player can be obtained as

Q: (a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a…

A:

Q: On May 26, 1934, a streamlined, stainless steel diesel train called the Zephyr set the world’s…

A: The total distance traveled is dtraveled =1633.8km Total elapsed time,…

Q: You are driving a car along a straight road at 122 kph. Suddenly, you saw a cat crossing the road…

A:

Q: The average person passes out at an acceleration of 7g (that is, seven times the gravitational…

A: Given ,initial velocity u=0final velocity V=59.9 mileshr=59.9x0.447 ms                   V=26.77…

Q: A runner with a good awareness of her pace runs along a path of unknown length at a speed of…

A: We need to find the distance run by the athlete.

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.