The wall has no velocity and no momentum, unless the vibrations caused by the collision are considered. So does that mean that momentum is not conserved because there's an impulse?
Homework Statement
A 2 kg frictionless cart with a velocity of 6 m/s hits a wall and rebounds with a velocity of 4 m/s. What is the impulse on the cart by the wall? Is momentum conserved?
Homework Equations
J = Δp
The Attempt at a Solution
J = Δp = pf-pi = mvf-mvi = 2kg (-4m/s -6m/s) = -20...
Homework Statement
A bicycle rider is moving with a velocity of 13.0 m/s. What is the angular velocity of his wheels if they have a diameter of 0.660m? Assume the wheels are rolling without slipping.
a) 39.4 m/s
b) 19.7 m/s
c) 39.4 s-1
d) 4.29 s-1
e) none of the above
Homework Equations
v =...
Homework Statement
Consider a cannon on a 50m high cliff. The cannon shoots a cannonball with an initial speed of 200m/s at an angle of 30°, causing the cannonball to land 41m away from the cannon. What is the magnitude of the velocity of the cannonball the instance just before it hits the...
Hi guys (gals?), looking forward to get to know and learn from people who are not physics-challenged like I am. Maybe I'll find some who are just as physics-challenged.