Unit 4: Systems of Particles and Linear Momentum
Showing 20 of 24 questions
The impulse-momentum theorem states that impulse equals:
A 2 kg ball moving at 5 m/s collides elastically with a 2 kg ball at rest. What are the final velocities?
A force [math] N acts on a 4 kg object initially at rest. The impulse from t = 0 to t = 3 s is
A rocket of mass M ejects fuel at a rate dm/dt with exhaust velocity [math] relative to the rocket. The thrust is
The center of mass of a system of two particles (m₁ = 3 kg at x = 2 m, m₂ = 1 kg at x = 6 m) is at
A force [math] acts on a particle of mass m initially at rest. The velocity as [math] is
In a perfectly elastic collision between two objects of equal mass where one is initially at rest, after the collision
A 2 kg cart moving at 6 m/s collides head-on with a 3 kg cart moving at 2 m/s. They stick together. The final velocity is
A chain of total mass M and length L lies on a table. One end is pulled off at constant speed v. The force needed when length x hangs off the table is
The velocity of the center of mass of a system is [math]. If no external forces act, [math] is
In a two-body system with no external forces, if one body accelerates to the right, the center of mass
A 4 kg cart moving at 3 m/s collides and sticks with a 2 kg cart at rest. What is the velocity of the combined carts after the collision?
Two objects of masses 2 kg and 6 kg are located at x = 0 m and x = 4 m respectively. Where is the center of mass?
In a two-dimensional collision, momentum is conserved:
A 10 kg object at rest explodes into two pieces — one of 4 kg moving at 6 m/s to the right. What is the velocity of the other piece?
In a head-on elastic collision between two objects of equal mass, where one is initially at rest, after the collision:
A rocket accelerates by:
On a force vs. time graph, the impulse delivered to an object equals:
In a ballistic pendulum, a bullet embeds in a hanging block. To find the bullet's initial speed, you use:
A 60 kg person standing on ice throws a 0.5 kg ball at 10 m/s. The person's recoil speed is:
Advertisement