Which one of the following qualifies as a collision? a.Two magnets approach, their north poles facing; they
Question:
Which one of the following qualifies as a collision?
a.Two magnets approach, their north poles facing; they repel and reverse direction without touching.
b.A truck strikes a parked car and the two slide off together, crumpled metal hopelessly entwined
c.A basketball flies through the air on a parabolic trajectory.
d.A basketball rebounds off the backboard.
e.All of the given examples are collisions.
2)
Which one of the following qualifies as a perfectly inelastic collision?
a.Two magnets approach, their north poles facing; they repel and reverse direction without touching.
b.A truck strikes a parked car and the two slide off together, crumpled metal hopelessly entwined
c.A basketball flies through the air on a parabolic trajectory.
d.A basketball rebounds off the backboard.
e.All of the examples are collisions
3)
Suppose you are in an enclosed boxcar, initially at rest on a track with no friction. You throw heavy darts at the front wall of the car which stick right into it. You MAY IGNORE DRAG FRICTION of the darts while they are in the air. Describe the motion of the cart.
Select one:
The cart does not move.
The cart moves backwards while the darts are in the air and stops completely when the dart impacts the front wall.
The cart moves backwards while the dart is in the air and slows down a bit but is still going backward slowly after the dart’s impact.
The cart moves forward slowly.
The cart moves backwards while the dart is in the air and moves forwards slowly after impact.
4)
Suppose you are in an enclosed boxcar, initially at rest on a track with no friction. You throw heavy darts at the front wall of the car which stick right into it. You MAY NOT IGNORE DRAG FRICTION of the darts while they are in the air. Describe the motion of the cart.
Select one:
The cart does not move.
The cart moves backwards while the darts are in the air and stops completely when the dart impacts the front wall.
The cart moves backwards while the dart is in the air and slows down a bit but is still going backward slowly after the dart’s impact.
The cart moves forward slowly.
The cart moves backwards while the dart is in the air and moves forwards slowly after impact.
5)
Two carts, of masses m and 2m, are at rest on an air track. If you push first one cart for 3 s and then the other for the same length of time, exerting equal force on each, the momentum of the light cart is
Select one:
a.
Four times the momentum of the heavy cart
b.
Twice the momentum of the heavy cart
c.
Equal to the momentum of the heavy cart
d.
Half the momentum of the heavy cart
e.
one quarter the momentum of the heavy cart
Expert Answer:
1 Since collision means interaction forces between objects for a short time that may be possible eve... View the full answer
Accounting concepts and applications
ISBN: 978-0538745482
11th Edition
Authors: Albrecht Stice, Stice Swain
