Recent content by y201

this equation is for the second question right?

can you start me off with few steps please?

sadly, i don't even know where to start.

Homework Statement 1) A rifle shoots a spring of mass 0.008kg and with a spring constant of 350 N/m. You wish to hit a target horizontally a distance of 15 m away by pointing the rifle at 45 degrees above the horizontal. How far should you extend the spring in order to reach the target...

what answer did you get using the 0.15m?

thanks a lot birkeland for your help. what did you get as the right answer?

Homework Statement A small truck is equipped with a rear bumper that has a spring constant of 800,000 N/m. the bumper can be compressed up to 15cm without causing damage to the truck. What is the maximum velocity with which a solid 1000-kg car can collide with the bumper without causing damage...