Which condition guarantees that a system's total momentum stays constant throughout a collision?

Which equation relates the initial and final velocities of two colliding objects in an isolated system?

Use the table, taking right as positive. What is the carts' total momentum before the collision?

The table gives accurate totals for the complete two-cart system. What accounts for the difference?

Using the table, calculate the carts' total kinetic energy after the collision.

Which collision type matches the isolated-system measurements in the table?

A 60 kg student at rest on a nearly frictionless floor catches a 15 kg ball traveling east at 5.5 m/s. How fast do they move together immediately afterward?

A 3000 kg truck moving east at 10 m/s hits a parked 1000 kg car. The car moves east at 12 m/s afterward. Neglecting external impulse, what is the truck's final velocity?

A 1.50 kg cart moving east at 30 cm/s hits a 0.50 kg cart moving west at 50 cm/s. The lighter cart leaves east at 70 cm/s. Neglecting external impulse, find the heavier cart's final velocity.

In Fish Catch, a 15 g fish traveling at 80 cm/s is swallowed by a stationary fish. They move together at 20 cm/s. What is the stationary fish's mass?

A 3000 kg truck moves right at 5 km/h, while a 1000 kg car moves left at 10 km/h. They collide and stick together. Neglecting external impulse, what is their final velocity?

For an isolated two-cart system, P shows the total momentum before collision and A shows one cart's momentum afterward. What is the other cart's momentum afterward?

After an isolated collision, each cart in the motion map has a mass of 0.50 kg. What was the system's total momentum before the collision?

A firearm and bullet initially have zero total momentum. After firing, the bullet has 6 kg m/s of momentum to the right. With negligible external impulse, what is the firearm's momentum?

Which explanation describes how a rocket accelerates in space?

A skateboarder pushes against the ground. For a system containing the skateboarder, skateboard, and Earth, is the ground's force on the rider internal or external?

In Fish Catch, keep the moving fish's mass and starting speed fixed but increase the stationary fish's mass. How does their shared final speed change?

During a road collision, two cars' total momentum changes from 20,000 to 18,000 kg m/s east in 0.10 s. What average net external force acts on the two-car system?

When two drifting space rocks join during accretion, what can happen to some of their initial kinetic energy?

In an isolated, head-on, perfectly elastic collision, a 0.20 kg marble moving right at 4 m/s strikes an identical marble at rest. What are their final velocities?