Physics Semester 2 Final (Part 1)

A 5kg object is moving 3m/s, what is the momentum?

• 15kgm/s

• 5kgm/s

• 3kgm/s

• 2kgm/s

Tags

NGSS.HS-PS2-2

Which of the variables control the amount of momentum an object has?(Multiple answers)

• displacement

• Velocity

• Mass

• Magnetic Fields

Tags

NGSS.HS-PS2-2

If a force of 50N is applied for 3s what is the change in momentum. (hint J=ft)

• 16.66 kgm/s

• 150 kgm/s

• 15kgm/s

• 144.44kgm/s

Before objects A and B collide, A has a momentum of 26 kg*m/s and B has a momentum of -14 kg*m/s. After the collision, A has a momentum of 8 kg*m/s. B has a momentum of..

• 2 kg*m/s

• 4 kg*m/s

• 6 kg*m/s

• 12 kg*m/s

• 32 kg*m/s

A small fish is at rest. A big fish, with 4 times the mass and a speed of 20 cm/s swallows the small fish. What is the new speed of the fish?

• 20 cm/s

• 16 cm/s

• 5 cm/s

• 25 cm/s

• 80 cm/s

An object that has momentum can be described as _________

• changing its velocity

• moving fast

• resisting changes in its state of motion

• having its mass in motion

• encountering a net force

Tags

NGSS.HS-PS2-2

An egg landing on a soft surface will remain intact. The surface increases the _____ and decreases the _____ during the impact

• impulse, time

• impulse, force

• force, time

• time, force

The equation to calculate momentum is

• p = m x v

• p = 1/2 m x v²

• p = m x g x h

• p = m x g

Tags

NGSS.HS-PS2-2

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

• 20000 N
• 20000 Joules
• 20000 Kg * m/s south
• 10000 kg * m/s south

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s
• 100 kg*m/s
• 250 kg*m/s
• 500 kg*m/s