Unit 8 Forces Test Review

What is the total current through this circuit? 

• 0.01 A
• 0.02 A
• 0.03 A
• 0.05 A

What is the total voltage (V_Total) across this circuit?

• 1.5 V
• 9 V
• 3 kΩ
• 10 kΩ

The ________ is the same across each element in a series circuit

• Voltage

• Resistance

• Current

• Power

The ________ is the same across each element in a parallel circuit

• Voltage

• Resistance

• Current

• Power

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• accelerate.

A person is pushed forward into their seatbelt when a car stops. Which of Newton's laws explains this motion?

• 1st law
•  2nd law
• 2 and 3 law
• 3rd law

Forces that cancel each other are called __________ forces

• inactivated
• balanced
• null
• neutral

Newton's second law of motion states that __________

• an object will remain at rest or keep moving in a straight line with constant speed unless a force acts on it
• he force on an object can be found by dividing its mass by its acceleration
• acceleration is calculated by dividing the force exerted on an object by the mass of the object, and that when a force acts on an object, its acceleration is in the same direction as the force
• when a force is applied on an object, there is an equal force applied by the object in the opposite direction

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)

• The one with a mass of .78 kg will have the greatest acceleration.
• The one with a mass of .52 kg will have the greatest acceleration.
• They will both accelerate at the same rate.

If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?

• 2 m/s²
• 4 m/s²
• 16 m/s²
• 10 m/s²