EOY REVIEW 2- Electrostatics & Momentum

EOY REVIEW DAY 2 Electrostatics & Momentum

By KAILEY MARTIN

Electrostatics

Match

Match the following

Write the formula down!

Then label your formula!

• F

• k

• q₁

• q₂

• r²

Electrostatic Force (N)

Coulomb's Constant

8.9 x 10⁹

Charge 1 (C)

Charge 2 (C)

Distance (m)

• Electrostatic Force (N)

• Coulomb's Constant

  8.9 x 10⁹

• Charge 1 (C)

• Charge 2 (C)

• Distance (m)

Multiple Choice

What happens to force if distance doubles? (Look at Rule of 1's notes)

Show your work in your notebook

• 1/4 as strong

• 1/2 as strong

• 2 times stronger

• 4 times stronger

Multiple Choice

What happens to force if one charge is halved? (Look at rule of 1's notes)

Show your work in your notebook

• The force increases by 4

• The force is doubled

• The force is halved

• The force decreases by 4

Multiple Choice

You rub some wool on two balloons. The electrons from the wool moved onto the balloons. What kind of charge do the balloons have now?

• Both Positive

• Both Negative

• One is Positive, the other is negative

Multiple Choice

If both of the balloons now have a negative charge, the balloons will

• Attract to each other

• Repel each other

• Be neutral (no attraction/repulsion)

Multiple Choice

Two balloons that both have a charge of (−1.6 × 10⁻¹⁹ C) are 0.10 m apart. What is the electrostatic force?

Show your work in your notebook!

k=8.9x10⁹

• -1.2 x 10^-15 N

• 1.2 x 10^-20 N

• -2.3 x 10^-26 N

• +2.3 x 10^-26 N

Momentum

Match

Match the variable with its unit

• N⋅s

• N

• m/s

• kg

• kg⋅m/s

Impulse (J)

Force (F)

Velocity (V)

Mass (m)

Momentum

(p)

• Impulse (J)

• Force (F)

• Velocity (V)

• Mass (m)

• Momentum

  (p)

Multiple Choice

Stanley is driving a car from work and another car hits him head-on. Which action reduces impact force in a crash?

• Increase force

• Decrease time of impact

• Increase time of impact

• Increase speed

Multiple Choice

Stanley weighs 30 kg and slows down from 10 m/s to 5 m/s. What is the impulse?

Show your work in notebook!

• 150 N-s

• 300 N-s

• 15 N-s

• 6 N-s

Drag and Drop

In Elastic collisions​ ​

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are/is conserved ​and objects

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In inelastic collisions ​

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is conserved and objects ​

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Drag these tiles and drop them in the correct blank above

KE and momentum

bounce off of each other

only momentum

stick together

energy is lost

velocity is always conserved