Unit 4 Physics Review

What does a free-body diagram represent?

• The energy of the object
• Forces acting on an object
• Direction of the object
• Position of the object

Tags

NGSS.HS-PS2-2

What is the unit for power?

• Joule
• Newton
• Pound
• Watt

If someone lifts a box with a force of 313_N and a distance of 255 centimeters how much work has he done?

• 70,425 Joules
• 798.15 Joules
• 75,250 Watts
• 798.15 Watts

If you drop a ball, ignoring air resistance, what happens to the total energy?

• The total energy increases
• The total energy decreases
• The total energy stays the same
• There is no energy when dropping a ball

Tags

NGSS.HS-PS3-2

Which of the following statements are false about work?

• Work is a form of energy
• A Watt is the standard metric unit for work
• Units of work would be equivalent to a Newton times a meter 
• A kg*ms²/s² would be a unit for work

Tags

NGSS.HS-PS2-1

How much work does a person do when they push a box a distance of 4 meters and apply a force of 10_N?

• 40 Joules
• 4.00 Joules
• .4 Joules
• 40 Watts

How much work do you do if you push a cart with a force of 22.5_N and a distance of 7.25 meters?

• 3.10 Nm
• 163.12 Nm
• 163.12 J
• There are 2 correct answers

What is the kinetic energy of a jogger with a mass of 65.0 kg traveling at a speed of 2.5 m/s?

• 162.5 J 
• 406.25 J
• 203.13 J
• 507.25 J

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

What is the mass of a baseball that has a kinetic energy of 100 J and is traveling at 5 m/s?

• 10 kg
• 8 kg
• 100 kg
• 2 kg

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-1

What is the kinetic energy of a 0.5 kg soccer ball that is traveling at a speed of 3 m/s?

• 9 J
• 2.25 J
• 8 J
• 4.5 J

Tags

NGSS.HS-PS3-1