Physics 101 lab4

If a force is exerted on an object, which statement is true? A large force always produces a large change in the object's momentum. A large force produces a large change in the object's momentum only if the force is applied over a very short time interval. A small force applied over a long time interval can produce a large change in the object's momentum. A small force always produces a large change in the object's momentum.

A small force applied over a long time interval can produce a large change in the object's momentum.

What is a collision called when a moving automobile collides with a parked automobile such that they continue moving together a short distance after the collision? An inelastic collision An elastic collision A collision of cultures When worlds collide

An inelastic collision

Two objects move separately after colliding, and both the total momentum and total kinetic energy remain constant. Identify the type of collision. Elastic Inelastic Nearly elastic Perfectly inelastic

Elastic

Which of the following equations best represents the impulse during a collision? Position × Time Velocity × Time Force × Time Speed × Time

Force × Time

Which of the following statements about the conservation of momentum is not correct? Momentum is conserved for a system of objects pushing away from each other. Momentum is not conserved for a system of objects in a head-on collision. Momentum is conserved when two or more interacting objects push away from each other. The total momentum of a system of interacting objects remains constant regardless of forces between the objects.

Momentum is not conserved for a system of objects in a head-on collision.

Two objects stick together and move with a common velocity after colliding. Identify the type of collision. Elastic Inelastic Nearly elastic Perfectly inelastic

Perfectly inelastic

When comparing the momentum of two moving objects, which of the following is correct? The object with the higher velocity will have less momentum if the masses are equal. The more massive object will have less momentum if its velocity is greater. The less massive object will have less momentum if the velocities are the same. The more massive object will have less momentum if the velocities are the same.

The less massive object will have less momentum if the velocities are the same.

A roller coaster climbs up a hill at 4 m/s and then zips down the hill at 30 m/s. The momentum of the roller coaster is greater up the hill than down the hill. is greater down the hill than up the hill. remains the same throughout the ride. is zero throughout the ride.

is greater down the hill than up the hill.

In a two-body collision, momentum is always conserved. kinetic energy is always conserved. neither momentum nor kinetic energy is conserved. both momentum and kinetic energy are always conserved.

momentum is always conserved.

The change in an object's momentum is equal to the product of the mass of the object and the time interval. product of the force applied to the object and the time interval. time interval divided by the net external force. net external force divided by the time interval.

product of the force applied to the object and the time interval