Classical Mechanics

What is the acceleration due to gravity on Earth?

• 9.8 m/s²

• 10 m/s²

• 8.9 m/s²

• 9.0 m/s²

If an object has a mass of 10 kg, what is its weight in newtons?

• 98 N

• 100 N

• 90 N

• 80 N

Which equation correctly represents work?

• Work = Force x Time

• Work = Mass x Acceleration

• Work = Force x Distance

• Work = Velocity x Time

Tags

NGSS.HS-PS3-2

What is the work done when a force of 5 Newtons moves an object 3 meters?

• 15 Joules

• 8 Joules

• 5 Joules

• 3 Joules

In what units is speed typically measured?

• Kilograms per hour

• Meters per second

• Liters per minute

• Miles per gallon

What does no change in speed indicate about acceleration?

• There is acceleration

• There is no acceleration

• Speed is increasing

• Speed is decreasing

Is air resistance a force?

• Yes

• No

Which of the following is a non-contact force?

• Tension force

• Normal force

• Drag force

• Gravitational force

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

What is a scalar?

• A quantity that has only magnitude

• A quantity that has both magnitude and force

• A quantity that has only direction

• A quantity that has both magnitude and direction

A person who walks 5 km East and then 8 km East, his displacement is?

• 8 km

• 13 km

• 3 km

• 5 km