National Aeronautics and Space Administration STRO LYMPICS ACCELERATION EVERYDAY EXPERIENCE Porsche 918 Spyder: Performance of cars is often measured in their ability to accelerate from 0 to 60 mph. 12.3 m/s 2 DEFINITION: the change of velocity of an object over time When we hear ‘acceleration,’ we often think of something that is moving very quickly. In fact, the concept of acceleration doesn’t rely on how fast an object is moving. Rather, acceleration is defined as the change in speed or the direction it is going. (The combination of speed and direction is known as “velocity.”) Therefore, an object moving at any rate can accelerate by speeding up, slowing down, or turning. The ability to do this quickly is important in many aspects of life, from driving an automobile, to performing in sports. It also dictates many characteristics of phenomena in space. Units: meters/seconds 2 (m/s 2 ), miles/hour/second (mi/hr/s), kilometers/hour/second (km/hr/s) PARALYMPIC EXAMPLE Elite wheelchair tennis players can accelerate very quickly during sprints. 17 m/s 2 COSMIC EXAMPLE B1509: The gravitational acceleration on the surface of a neutron star is about a trillion times that on Earth. About three trillion m/s 2 At the center of this image from NASA’s Chandra X-ray Observatory is a very young, rapidly spinning neutron star which is spewing energy out into the space around it. www.nasa.gov chandra.si.edu/olympics
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STROLYMPICS
National Aeronautics and Space Administration
STROLYMPICS
ACCELERATION
EVERYDAY EXPERIENCE
Porsche 918 Spyder: Performance of cars is often measured in their ability to accelerate from 0 to 60 mph. 12.3 m/s2
DEFINITION: the change of velocity of an object over time
When we hear ‘acceleration,’ we often think of something
that is moving very quickly. In fact, the concept of
acceleration doesn’t rely on how fast an object is moving.
Rather, acceleration is defined as the change in speed
or the direction it is going. (The combination of speed
and direction is known as “velocity.”) Therefore, an
object moving at any rate can accelerate by speeding up,
slowing down, or turning. The ability to do this quickly
is important in many aspects of life, from driving an
automobile, to performing in sports. It also dictates many
characteristics of phenomena in space.
Units: meters/seconds2 (m/s2), miles/hour/second
(mi/hr/s), kilometers/hour/second (km/hr/s)
PARALYMPIC EXAMPLE
Elite wheelchair tennis players can accelerate very quickly during sprints. 17 m/s2
COSMIC EXAMPLE
B1509: The gravitational acceleration on the surface of a neutron star is about a trillion times that on Earth. About three trillion m/s2
At the center of this image from NASA’s Chandra Xray Observatory is a very young, rapidly spinning neutron star which is spewing energy out into the space around it.
cars is often measured in their ability to accelerate from 0 to 60 mph. 12.3 m/s2
characteristics of phenomena in space.characteristics of phenomena in space.
Units: meters/seconds2 (m/s(m/s2), miles/hour/second
(mi/hr/s), kilometers/hour/second (km/hr/s)(mi/hr/s), kilometers/hour/second (km/hr/s)
PARALYMPIC EXAMPLE
Elite wheelchair tennis players can accelerate very quickly during can accelerate very quickly during sprints. 17 m/s2
www.nasa.gov chandra.si.edu/olympics
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