Gravity and Newton's Second Law, II

Net Forces Video Lesson

Learning Targets...

• Conceptually apply Newton’s Second Law of Motion.

• Apply gravity / satellite graphics to draw conclusions.

Multiple Choice

As a satellite is farther from Earth the Satellites MASS will...

• Increase

• Decrease

• Stay the same

Multiple Choice

As a satellite is farther from Earth the Satellites WEIGHT will...

• Increase

• Decrease

• Stay the same

Multiple Choice

Suppose a satellite has an orbiting altitude of 1,000 km. The velocity of the satellite to maintain orbit must be about...

• 6,000 m/s

• 7,000 m/s

• 8,000 m/s

• 9,000 m/s

Multiple Choice

The LAGEOS satellite was deployed to actually track plate tectonic movement. The satellite (actually there are two) orbit at 2,000 km. What is the value of gravity at this altitude?

• 4.8 m/s²

• 5.8 m/s²

• 6.0 m/s²

• 5.5 m/s²

Multiple Choice

The relationship between satellite altitude and speed to maintain orbit is...

• Directly Related

• Inversely Related

Satellite Altitude to Orbit velocity is inversely related.

As altitude increases, the obit speed required decreasers. (This is due to lower gravity).

Multiple Choice

Technically gravity on Earth's surface is greater....

• Near Mountains

• Near Oceans

• Near Desserts

However...Desserts (not deserts) may seem to attract people to them, ha!

Desert = Dry arid area.

Dessert = Sweet Treats often served after a meal.

Multiple Choice

If a car is able to accelerate at a maximum rate of 10 m/s² and I double the mass, but keep Force the same, then the acceleration will likely...

• Reduce by half

• Double

• Stay the same

Multiple Choice

If a car is able to accelerate at a maximum rate of 10 m/s2 and I double the car's maximum force applied then the new acceleration rate will...

• Reduce by half

• Double

• Stay the same

Multiple Choice

Suppose a have a motorized vehicle that has a maximum acceleration of 1 m/s². If I double the mass and half the Force applied, then the new acceleration will be....

• 4 m/s²

• Remain at 1 m/s²

• 0.25 m/s²

• 0.5 m/s²

• 2 m/s²

Multiple Choice

Suppose a have a motorized vehicle that has a maximum acceleration of 1 m/s². If I triple the mass and triple the Force applied, then the new acceleration will be....

• 3 m/s²

• Remain at 1 m/s²

• 0.11 m/s²

• 0.25 m/s²

• 9 m/s²

Multiple Choice

Suppose a have a motorized vehicle that has a maximum acceleration of 1 m/s². If I triple the mass and double the Force applied, then the new acceleration will be....

• 3/2 m/s²

• Remain at 1 m/s²

• 2/3 m/s²

• 1/2 m/s²

• 2 m/s²

Multiple Choice

Suppose a have a motorized vehicle that has a maximum acceleration of 1 m/s². If I halve the mass and triple the Force applied, then the new acceleration will be....

• 6 m/s²

• Remain at 1 m/s²

• 1/6 m/s²

• 3 m/s²

• 2 m/s²

Poll

LT #1 - Conceptually apply Newton’s Second Law of Motion.

• Full Mastery

• Partial Mastery

• Little Mastery

• No Mastery

Poll

LT #2 - Apply gravity / satellite graphics to draw conclusions.

• Full Mastery

• Partial Mastery

• Little Mastery

• No Mastery