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Dynamics: Newton’s Laws of Motion
ELECTRICITY: Current
ELECTRICITY: Current
ELECTRICITY: Resistance
Elasticity
Electric fields
Electromagnetism
Electromagnetism
Energy: Application And Uses
Experimental physics
Forces
Gravitational fields
Heat
Kinematics in Two Dimensions: Vectors, projectiles
Kinematics in one dimension
Linear Momentum
MOTION
MOTION
MOTION
MOTION
MOTION
MOTION: Circular
MOTION: Collision
MOTION: Inclined plane
MOTION: Simple harmonic motion (SHM)
Magnetism
Optics
PLASTICS
PRESSURE
Radioactivity
TEMPERATURE
The Laws of Thermodynamics
Units System
Units System
Units, dimensions and homogeneity
WAVES: Electromagnetic
WAVES: Electromagnetic
WAVES: Sound
5/32 MCQs for:
Linear Momentum
Consider two unequal masses, M and m. Which of the following statements is false?
The center of mass lies on the line joining the centers of each mass.
The center of mass is closer to the larger mass.
It is possible for the center of mass to lie within one of the objects.
If a uniform rod of mass m were to join the two masses, this would not alter the position of the center of mass of the system without the rod present.
A 50-kg pitching machine (excluding the baseball) is placed on a frozen pond. The machine fires a 0.40-kg baseball with a speed of 35 m/s in the horizontal direction. What is the recoil speed of the pitching machine? (Assume negligible friction.)
0.28 m/s.
4.4 x 103 m/s.
0.70 m/s.
0.14 m/s.
A handball of mass 0.10 kg, traveling horizontally at 30 m/s, strikes a wall and rebounds at 24 m/s. What is the change in the momentum of the ball?
72 kgm/s.
1.2 kgm/s
0.60 kgm/s.
5.4kgm/s.
A small object with momentum 5.0 kgm/s approaches head-on a large object at rest. The small object bounces straight back with a momentum of magnitude 4.0 kgm/s. What is the magnitude of the large object's momentum change?
1.0 kgm/s.
9.0 kgm/s.
5.0 kgm/s.
4.0 kgm/s.
Two objects collide and stick together. Kinetic energy:
Is definitely not conserved.
Is conserved only if the collision is elastic.
Is conserved only if the environment is frictionless.
Is definitely conserved.
