Revv.

Determine the momentum of 1000-kg car moving northward at 20 m/s......... 

• 20000 N
• 20000 Joules
• 20000 Kg * m/s
• 20000 kg * m/s north

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape
• mass and speed
• mass and veloctiy
• mass and energy

In any collision (crash) the ______ is ALWAYS constant

• Total Momentum
• total speed
• total Velocity
• Energy

What happens to the speed of the wagon as the rain collects inside of it?

• it decreases
• it remains constant
• it increases

If you double the velocity of an object, then its momentum will ______________.

• will double

• will half

• will quadruple (x4)

• will be quartered (x 1/4)

If 2 objects collide and stick together, what will happen to their velocities?

• velocities will increase
• velocities will decrease
• velocities will stay the same
• none of the above

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

What is the unit for momentum?

• m/sec
• kg/sec
• kg/m
• kg m/sec

The momentum before objects collide is always written as:

Tags

112.45.c.7.E

Consider this elastic collision between two spheres. They collide and then bounce apart. Sphere A has a mass of 8-kg. Sphere B has a mass of 5-kg. Before the collision, Sphere A is travelling to the right at 3 m/s and Sphere B is travelling to the left at 4 m/s. After the collision, Sphere A is travelling 2 m/s. How fast is Sphere B travelling after the collision?

• about 5.6 m/s

• about 3.2 m/s

• about 7.4 m/s

• about 8.1 m/s