Dave is moving 3 m/s when he crashes his bike into a wall, which stops him in 0.6 seconds. If Dave and his bike have a mass of 90 kg, what was the force applied by the wall?

Question

roadjester · Answer

I'm not too sure on this actually but I'll give it a shot.

acceleration is change in velocity over time.
so if Dave is moving at 3 m/s for 0.6 seconds, if you divide 3 by 0.6 you'll get acceleration.

F=ma

you know the mass of the bike, so if you then multiply the mass of the bike by the acceleration, you should potentially get the force.