question archive Student throws a 0
Student throws a 0
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Student throws a 0.10 kg ball at the wall ball hits the wall perpendicularly with a speed of 5.0 m a second and then bounces straight back with a new speed of 4.0 m a second what is the impulse given to the ball by the wall?
A yellow rubber ball of a mass of 0.40 kg moving at 5.0 m/s collides with the stationary blue ball of people mass after the collision of the yellow ball slows down to the new varsity of 2.0 m/s what is the velocity of the blue ball after the collision?
A 15 kg cart increases its speed from 3.7 m/s to 6.10 m/s determine the impulse given to the cart
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1) Given:
mass=0.10kg
vi=5m/s
vf=4m/s
Required: Impulse
Solution:
Impulse=m(vf-vi)
Impulse=(0.10)(-4-5)
Impulse=-0.9kg*m/s
2) Given:
mass=0.40kg
vi=5.0m/s
vf=2.0m/s
Required: velocity
m1v1+m2v2=m1v'+m2vf
0.40(5)+0=0.40(2)+(0.40)vf
2=0.8+0.4vf
0.4vf=2-0.8
0.4vf=1.2
vf=1.2/0.4
vf=3m/s
3) Given:
mass=15kg
vi=3.7m/s
vf=6.10m/s
Required: Impulse
Impulse=m(vf-vi)
Impulse=15(6.10-3.7)
Impulse=36kg*m/s
