Spheres A (mass 0.020 kg), B (mass 0.030 kg), and C (mass 0.050 kg) are approaching the origin as they slide on a frictionless air table. The initial velocities of A and B are given in Fig. P8.69. All three spheres arrive at the origin at the same time and stick together, (a) What must the x - and y -components of the initial velocity of C be if all three objects are to end up moving at 0.50 m/s in the + x -direction after the collision? (b) If C has the velocity found in part (a), what is the change in the kinetic energy of the system of three spheres as a result of the collision?
Spheres A (mass 0.020 kg), B (mass 0.030 kg), and C (mass 0.050 kg) are approaching the origin as they slide on a frictionless air table. The initial velocities of A and B are given in Fig. P8.69. All three spheres arrive at the origin at the same time and stick together, (a) What must the x - and y -components of the initial velocity of C be if all three objects are to end up moving at 0.50 m/s in the + x -direction after the collision? (b) If C has the velocity found in part (a), what is the change in the kinetic energy of the system of three spheres as a result of the collision?
Spheres A (mass 0.020 kg), B (mass 0.030 kg), and C (mass 0.050 kg) are approaching the origin as they slide on a frictionless air table. The initial velocities of A and B are given in Fig. P8.69. All three spheres arrive at the origin at the same time and stick together, (a) What must the x- and y-components of the initial velocity of C be if all three objects are to end up moving at 0.50 m/s in the +x-direction after the collision? (b) If C has the velocity found in part (a), what is the change in the kinetic energy of the system of three spheres as a result of the collision?
Spheres A (mass 0.020 kg), B (mass 0.030 kg), and C (mass 0.050 kg2 are approaching the origin as they slide on a frictionless air table. The initial velocities of A and B are given in Fig. . All three spheres arrive at the origin at the same time and stick together. (a) What must the x- and y-components of the initial velocity of C be if all three objects are to end up moving at 0.50 m/s in the +x-direction after the collision? (b) If C has the velocity found in part (a), what is the change in the kinetic energy of the system of three spheres as a result of the collision?
Spheres A (mass 0.040 kg), B (mass 0.060 kg) and C (mass 0.080 kg) are
approaching the origin as they slide on a frictionless air table. The initial
velocities of A and B are v₁ = 1.60 m/s in the negative x direction and VB = 0.90
m/s at an angle 08 = 60°, as shown. All three spheres arrive at the origin at the
same time and stick together. After the collision, the masses move at a speed of
0.50 m/s in the -x direction.
UC
y
OB
B
UB
VA
A
X
C
a. What is the x-component of the initial velocity of C?
b. What is the y-component of the initial velocity of C?
c. Calculate the change in mechanical energy of the collision.
d. What type of collision is this? Explain.
A small block of mass
m1 = 0.770 kg
is released from rest at the top of a curved wedge of mass
m2 = 7.50 kg,
which sits on a frictionless horizontal surface. When the block leaves the wedge, its velocity is measured to be 4.00 m/s to the right.
(a) What is the velocity of the wedge after the block reaches the horizontal surface? (Enter the magnitude of the velocity.)
m/s(b) What is the height h of the wedge? m
Chapter 8 Solutions
University Physics with Modern Physics, Volume 1 (Chs. 1-20) and Mastering Physics with Pearson eText & ValuePack Access Card (14th Edition)
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