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A steel ball of mass moving with a velocity of 2.0 m/s [E], strikes a 1.2 kg copper ball initially moving 1.0m/s [W]. The collision is a glancing one, causing the steel ball to have a velocity of 1.5 m/s [W 30 degrees N] and the copper to move in the direction [E 47 degrees S]. Is the collision...

Mars travels around the Sun in 1.68 Earth years in an approximately circular orbit with a radius of 2.18 x 10^8 km. Determine the mass of the Sun. Fairly easy, I know most of how to do it but I keep getting wrong answers. Help me out a bit? Thanks!

No, the car has to be as LIGHT as possible. Gallons of stuff and bicycle wheels won't work. There's also the 20 cm x 20 cm limit for the car in terms of length and width. The height could be higher, but the car will have to support it with its small mass already. I doubt the Mac 11 will be...

Any ideas for the delay mechanism to fire the projectile? ;/

Yes, that's why I'm trying to find ways to minimize mass as much as possible. Will large foam wheels have a chance of getting to 1m in sand? The height is around 5-10 cm, I believe. Nothing too outrageous. Whereever the projectile first lands, that's where the final target hit counts as. Oh...

Any projectile can be used. Yes, as long as the propulsion system(s) are solely elastic potential/gravitational potential. It goes into a target, like a bullseye, and the bullseye area (best area) is 40cm x 20cm. Accuracy accounts for 1/3 of the final score. Launch position and mass account...

Thanks, yep, the sand part is quite an issue. Larger wheels from toy cars would be nice, right? Plus of course the rubber band style of propelling the car I still think the main problem for me lies in the projectile firing. Propelling the car should be fine.

Hi guys. We have recently got a design 'competition' where we build a vehicle that will propel itself 1.0 m forward and then fire a projectile in attempt to hit a target that is 2.0 m away, perpendicular to the direction of travel. The vehicle will be traveling on sand, and can only move by...