help!!

[snapshot5000]

I am new at taking pictures,and have been asked to take pictures of some people racing going about 35 to 45 mph. How would I have the best pictures? I have to be there in 35 minutes Need help fast I am using a nikon 5000

 

[Vtec44]

Pan, leading space, shutter priority!

 

[Compaq]

Slow enough shutter to blur background, fast enough to keep subject sharp. Stable stance, smooth motion. Pan with your whole upper body, not just your arms.

 

[KmH]

I am new at taking pictures,and have been asked to take pictures of some people racing going about 35 to 45 mph. How would I have the best pictures? I have to be there in 35 minutes Need help fast I am using a nikon 5000

35 minutes.