Momentum and Collisions 4

Consider a collision between a very massive and a less massive object. The object with the least mass will encounter the greater force.

False

Momentum conservation is a tried and tested truth which governs the collisions between two objects. In any and every collision, the total momentum of the two colliding objects is conserved.

False

Momentum is always conserved by the two colliding objects in any collision.

False

The law of conservation of momentum applies to any collision between two objects which occurs in an isolated system. Assuming that the collision between Object A and Object B occurs in an isolated system, which of the following statements are consistent with this law?

The total momentum of Objects A and B will be the same before and after the collision The change in Object A's momentum will be equal and opposite to the change in Object B's momentum

Two Silly Putty balls of equal mass are moving in opposite directions at equal speeds. The balls collide head on and immediately stop. In this collision, ____.

momentum is clearly conserved

An unfortunate bug experiences a collision with a high speed bus. During the collision, the bug (or the bus) encounters ____ force, ____ impulse, ____ momentum change, and ____ acceleration.

the same; the same; the same; a greater

A golf ball is at rest on a tee when a high speed and more massive golf club collides with it. Assume that this collision between club and ball occurs in an isolated system. During the collision, the golf ball encounters ____ force, ____ impulse, ____ momentum change, and ____ acceleration.

the same; the same; the same; a smaller

A tennis ball is loaded into a more massive home-made cannon. The reactor chamber is filled with fuel, lit and an explosion occurs. During the explosion, the tennis ball (or the cannon) encounters ____ force, ____ impulse, ____ momentum change, and ____ acceleration.

the same; the same; the same; a smaller

In a physics lab, two carts undergo a collision on a low-friction track. Cart A has twice the mass and twice the speed of Cart B. It is assumed that the two carts collide in an isolated system. During the collision, Cart B (or Cart A) encounters ____ force, ____ impulse, ____ momentum change, and ____ acceleration.

the same; the same; the same; a smaller