Understanding Forces and Motion

What is the formula to calculate work done?

• Work done = Force + Distance

• Work done = Force × Distance

• Work done = Force / Distance

• Work done = Distance - Force

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If a trolley is pushed with a force of 50 N for a distance of 90 meters, what is the work done?

• 4,500 J

• 400 J

• 40 J

• 8,000 J

Tags

NGSS.MS-PS2-2

If a climber weighs 660 N and climbs a 20 m cliff, how much work is done against gravity?

• 13,200 J

• 1,320 J

• 660 J

• 20 J

A 975-kg car, C, moving south at 22.5 m/s, collides with a 2165-kg truck, D, moving west at 17.5 m/s. They stick together. What is their final velocity?

• 16.5 m/s

• 26.5 m/s

• 13.9 m/s

• 52.8 m/s

Tags

NGSS.MS-PS2-1

What would happen to the power if the energy transferred was halved?

• It would double

• It would stay the same

• It would halve

• It would triple

What does the symbol omega represent in the formula for rotational kinetic energy?

• Angular velocity

• Linear velocity

• Frequency

• Wavelength

Which of the following best describes kinetic energy?

• Energy due to position

• Energy due to motion

• Energy due to temperature

• Energy due to pressure

Tags

NGSS.MS-PS3-1

What is the significance of the moment of inertia in rotational kinetic energy?

• It measures the resistance to linear motion

• It measures the resistance to rotational motion

• It measures the resistance to temperature change

• It measures the resistance to pressure change

What is the energy called that is stored due to interactions between objects in a system?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy

Tags

NGSS.MS-PS3-2

What does GPE stand for?

• General Potential Energy

• Gravitational Potential Energy

• Ground Potential Energy

• Gross Potential Energy

Tags

NGSS.MS-PS3-2