Chapter 2: Q32P (page 34)

A world’s land speed record was set by Colonel John P. Stapp when in March 1954, he rode a rocket propelled sled that moved along a track at $^{1020 km / h}$ . He and the sled were brought to a stop in $^{1.4 \sec}$ . In terms of g, what acceleration did he experience while stopping?

Short Answer

Expert verified

Acceleration in terms of $^{g}$ is $^{21 g}$

Step by step solution

Given information

$v = 1020 km / h t = 1.4 s$

Concept and formula used in the given question

The problem deals with the simple physical quantity acceleration which refers to the rate at which the velocity changes. Using the velocity and given time in standard notation, the acceleration can be found. And by dividing it bythe value of “g,” the acceleration in terms of “g” can be determined. To initiate, all the quantities should be converted to the standard units.

Formula:

The acceleration in general is given by,

$a = \frac{v}{t}$

To calculate acceleration in terms of g

To find acceleration, first convert $^{1020 km / h}$ into $^{m / s}$

$1 = \frac{km}{h} = \frac{1000}{3600} m / s \frac{1020 km}{h} \times \frac{1000}{3600} \frac{m}{s} \times \frac{h}{1 km} = 283.33 m / s v = 283.33 m / s$

Using equation (i),

$a = \frac{v}{t} - \frac{283.33}{1.4} = 202.4 m / s^{2}$

Acceleration in terms of g,

$a = \frac{202 . 4}{9.81} = 21 gm / s^{2}$

Thus, the acceleration in terms of $^{g}$ is $^{21 g}$

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A world’s land speed record was set by Colonel John P. Stapp when in March 1954, he rode a rocket propelled sled that moved along a track at $^{1020 km / h}$ . He and the sled were brought to a stop in $^{1.4 \sec}$ . In terms of g, what acceleration did he experience while stopping?

Short Answer

Step by step solution

Given information

Concept and formula used in the given question

To calculate acceleration in terms of g

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A world’s land speed record was set by Colonel John P. Stapp when in March 1954, he rode a rocket propelled sled that moved along a track at1020km/h. He and the sled were brought to a stop in1.4sec. In terms of g, what acceleration did he experience while stopping?

Short Answer

Step by step solution

Given information

Concept and formula used in the given question

To calculate acceleration in terms of g

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Rotational Dynamics

Nuclear Physics

Electromagnetism

Quantum Physics

Radiation

Medical Physics

Study anywhere. Anytime. Across all devices.

A world’s land speed record was set by Colonel John P. Stapp when in March 1954, he rode a rocket propelled sled that moved along a track at $^{1020 km / h}$ . He and the sled were brought to a stop in $^{1.4 \sec}$ . In terms of g, what acceleration did he experience while stopping?