# Ideas for questions

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```					On the 14th of September 2002 Tim Montgomery of USA, became the world's fastest man, clocking an
incredible 100 m time of 9.78 seconds at the 2002 International Association of Athletics Federations final
in Paris, France. A typical world class sprinter accelerates to a maximum speed in 4.0 seconds. What would
be Tim Montgomery average acceleration during the first four seconds of his world breaking run of 9.78
seconds be.

Ethiopia's Haile Gebreselassie (Gabe) is widely considered one of history’s greatest distance runners. He
ran the 10,000 m in a record 26 minutes 22.75 seconds on June 1, 1998, in Hengelo, The Netherlands. Less
that two weeks later June 13 1998, he ran the 5,000 m in 12 minutes 39.36 seconds at Helsinki, Finland.
What was Haile Gebreselassie average speed for the record inspiring runs at both the 5,000 metres and
10,000 metres.

Consider the Eiffel tower in Paris from the ground to the flagpole its height was 312,27 meters in 1889,
whereas it is today, 324 meters high with antennae. Different French television companies install their
antennae right on top of the tower. If a coin is drop form the tower compute the speed and position after
1.0sec 2.0sec 3.0sec

The annual boat race between Cambridge and Oxford takes place on the river Thames in London. The start
is near to Putney Bridge and the finish is in Mortlake, just before Chiswick Bridge. The distance between
the start and finish position is 6.78 kilometres. The course record was set in 1998 and held by Cambridge
with a time of 16.19 minutes, what was the average speed of the Cambridge crew in 1998.

An aeroplane travels 520 m down the runway before taking off. If it starts from rest, moves with constant
acceleration, and becomes airborne in 16.0 s, what is its speed, in m/s, when it takes off?

Greg Rusedski currently holds the record set on the 14 th March, 1998 though this may not be the case any
more at a speed of 239.8 km/hr. The force of Rusedski's ferocious serve is only 40 mph under the top speed
of a Ferrari. Assuming that the average court length is 24 metres how long does it take the ball to travel
from one end of the court to the other. If a persons reaction time was 1.8 seconds would he/she have
enough time to react to the moving ball.

The fastest server in the women’s game is Venus Williams (USA), who recorded a serve of 205 km/h
(127.4 mph) during the European Indoor Championships at Zürich, Switzerland, on October 16, 1998.
Venus and her sister Serena are both coached by their charismatic father. What is the position of Venus ball
after 1.0 sec. 2.0 sec.

A bus leaving Dublin from the station accelerates at a rate of 1.80 m/s2 for 12.0 s. It runs at constant speed
for 30.0 s and slows down at - 3.50 m/s2 until it stops. Calculate the total distance the bus has covered from
the bus station to when it stops.

The one-mile (1.609-km) land speed record is 1,227.985 km/ h (763.055 mph), set by Andy Green in
Thrust SSC in the Black Rock Desert, Nevada, USA, on October 15, 1997. Thrust SSC (Super Sonic Car)
completed its record-breaking run in a matter of seconds, but was the culmination of six years of work and
a six-week on-site campaign. How long do this record breaking achievement take place? What was the
average acceleration of the Thrust SSC over the one-mile long course?

The highest speed ever achieved on a bicycle is 268.831 km/h (167.043 mph), by Fred Rompelberg (The
Netherlands) at Bonneville Salt Flats, Utah, USA, on October 3, 1995. Though Freds record attempt was
greatly assisted by the slipstream from his lead vehicle. How far would Fred be able to cycle in 30 minutes
if he was able to maintain his highest speed for the entire journey.

The reaction time of the average automobile driver is about 0.7 s. (The reaction time is the interval between
the perception of a signal to stop and the application of the brakes.) If an automobile can slow down with
an acceleration of - 4.0 m/s2, compute the total distance covered in coming to a stop after a signal is
observed a) from an initial speed of 6. 7 m/s (15 miles per hour) in a school zone b) from an initial speed of
24.6 m/s (55 miles per hour)
An cheetah moving with constant acceleration covers the distance between two points 80 m apart in 2.70 s.
Its speed as it passes the second point is 30.0 m/s. a) What is its speed at the first point? b) What is the
acceleration?

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 views: 6 posted: 12/14/2011 language: English pages: 2