A 0.55 kg basketball strikes a smooth floor at 4.0 m/s[20° below
the horizontal] and rebounds...
A 0.55 kg basketball strikes a smooth floor at 4.0 m/s[20° below
the horizontal] and rebounds at 4.0 m/s[20°above the
horizontal].
a) Find the horizontal impulse acting on the ball.
b) Find the vertical impulse acting on the ball.
Ball A of mass 0.55 kg has a velocity of 0.65 m/s east. It
strikes a stationary ball, also of mass 0.55 kg. Ball A deflects
off ball B at an angle of 37° north of A's original path. Ball B
moves in a line 90° right of the final path of A. Find the momentum
(in kg m/s) of Ball A after the collision.
A 2 kg disk traveling at 3.0 m/s strikes a 1.0 kg stick of
length 4.0 m, that is lying flat on nearly frictionless ice. The
disk strikes at the end point of the stick at a distance r=2.0 m
from the stick's center. Assume the collision is inelastic and the
disk adheres to the stick.The moment of inertia of the stick about
its center of mass is 1.33kg*m^2.
a) Does the disk have initial linear momentum?
b) Does the...
A
8-g bullet moving horizontally with speed of 250 m/s strikes and
remains in a 4.0-kg block initially at rest on the edge of a table.
The block, which is initially 80 cm above the floor, strikes the
floor a horizontal distance from the base of table. What is the
horizontal distance on the floor?
(Explain using the law of conservation of momemtum)
When a ball strikes the floor and rebounds, it
appears that momentum is not conserved. Is this true? Why or why
not?
A golf ball strikes a hard, smooth floor at an angle of 35.0 °
and, as the drawing shows, rebounds at the same angle. The mass of
the ball is 0.0542 kg, and its speed is 41.0 m/s just before and
after striking the floor. What is the magnitude of the impulse
applied to the golf ball by the floor? (Hint: Note that only
the vertical component of the ball's momentum changes during impact
with the floor, and ignore the...
A mass m = 17 kg is pulled along a horizontal floor, with a
coefficient of kinetic friction μk = 0.06, for a
distance d = 5.1 m. Then the mass is continued to be pulled up a
frictionless incline that makes an angle θ = 28° with the
horizontal. The entire time the massless rope used to pull the
block is pulled parallel to the incline at an angle of θ = 28°
(thus on the incline it is...
A mass m = 16 kg is pulled along a horizontal floor with NO
friction for a distance d =8.4 m. Then the mass is pulled up an
incline that makes an angle ? = 25
A mass m = 17 kg is pulled along a horizontal floor, with a
coefficient of kinetic friction ?k = 0.06, for a distance d = 6.7
m. Then the mass is continued to be pulled up a frictionless
incline that makes an angle ? = 33° with the horizontal. The entire
time the massless rope used to pull the block is pulled parallel to
the incline at an angle of ? = 33° (thus on the incline it is...
A mass m = 17 kg is pulled along a horizontal floor with NO
friction for a distance d =5.7 m. Then the mass is pulled up an
incline that makes an angle θ = 34° with the horizontal and has a
coefficient of kinetic friction μk = 0.38. The entire time the
massless rope used to pull the block is pulled parallel to the
incline at an angle of θ = 34° (thus on the incline it is parallel...
A 2000-kg car is traveling at 20 m/s on a horizontal road and
the engine suddenly is broken down. The brakes immediately are
applied and the car skids to a stop in 4.0 s with a constant
acceleration because of kinetic friction. What is the coefficient
of kinetic friction between the tires and road?