If a ball of mass of 0.1kg is placed at the end of the compressed spring(adsbygoogle = window.adsbygoogle || []).push({});

(k=4000N/m). If the spring is compressed 1cm...

a. What will the kinetic energy of the ball be?

b. How fast is it moving?

c. What is its momentum?

d. What was the force on the ball from the spring?

e. If it took 0.01s to go from compression to ‘launch’, what is the impulse?

f. What was the power?

g. If this ball was on the bottom of a frictionless roller coaster track, what is

the maximum height that the loop could be?

h. What is the speed of the ball at the bottom of the loop?

i. If this 0.1kg mass collides with a 1.0kg mass that was at rest, what is the

momentum of the system after the collision? (this is an elastic collision)

j. What are the velocities (magnitude and direction) of 0.1kg and 1.0kg

masses

What I got for (a)

is KE=1/2*mv^2

KE= 1/2*(0.1kg)*(0.01m/s)= 0.0005J

b) the ball is moving slow

then I didn't know how to find the momentum

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# Homework Help: Need help with this physics question!

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