Sunday, September 23, 2007

E-Activity 3



Rocket launch

1-The data in the table are for a rocket launch.
(a) Plot a velocity-time graph for the rocket as it lifts off.
(b) how does the velocity-time graph show the rocket is accelerating as it leaves the launch pad?
(c) Draw a line of best fit through the points. Measure the gradient of this line to find the rocket's acceleration.

Performance figures

2-Two sports cars are tested against each other from a standing start.
Look at their velocity-time graphs.
(a) Which car accelerates more quickly to 60 mph?
(b) Which car has the greater top speed?
(c) Which car decelerates faster when it brakes?
Give reasons for your answers.

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