Physics - Weight & Friction

a measure of the gravitational force exerted on an object

• weight

• mass

• density

• friction

Tags

NGSS.HS-PS2-4

The weight of an object can be calculated using the following equation (p. 135):

• F_g = ma_g

• F_g = 1/2 mv²

• F_g = a² + b²

• F_g = v_f - v_i

Tags

NGSS.HS-PS2-1

a_g is the magnitude of the acceleration due to gravity.

On the surface of earth, a_g = ?

• 9.8 m/s²

• 12 m/s²

• 8.9 m/s²

• 2.3 m/s²

Tags

NGSS.HS-PS2-4

Which of these is an inherent property of an object? (p. 135)

• mass

• weight

If an astronaut weighs 180 lbs on earth, how much will she weigh on the moon? (p. 135)

• 30 lbs

• 180 lbs

• 150 lbs

• 360 lbs

Tags

NGSS.HS-PS2-4

The value of a_g on the surface of a planet depends on the planet's _____________________.

• mass and radius

• circumference

• height and width

• carbon and nitrogen content

Tags

NGSS.HS-PS2-4

Why do objects weigh less at higher altitudes than they do at sea level?

Tags

NGSS.HS-PS2-4

a force that acts on an object lying on a surface, acting in a direction perpendicular to the surface

• normal force

• friction

• velocity

• free fall

Tags

NGSS.HS-PS2-1

Give an example of a normal force.

In the example in Figure 4.2 (p. 136), the normal force is equal and opposite to the force of:

• gravity

• friction

• torsion

• electricity

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4