Physics exam 1 review

What are the SI units of mass?

• kg
• g
• m
• s
• m/s

What are the SI units of force?

• N
• kg
• g
• m
• s

Tags

NGSS.HS-PS2-1

What are the SI units of speed or velocity?

• m/s
• m/s/s
• s
• m
• s/m

Tags

NGSS.HS-PS4-1

What are the SI units of acceleration?

• m/s/s
• m/s
• m
• s
• s/m

Tags

NGSS.HS-PS2-1

Using SI units, what is the weight of a 4 kg object?

• -39.2N
• -39.2 kg
• -29.4 N

• -9.8 N
• 9.8 N

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

After falling from rest on Earth and being in free fall for 2.0 s, how fast is a pencil falling? To do this, you would use v = gt where g = -9.8 m/s/s. Think about what units make sense for how fast something is moving.

• -19.6 m/s
• -9.8 m/s
• -19.6 m/s/s
• -4.9 m/s/s
• -4.9 m/s

Tags

NGSS.HS-PS2-1

What is the horizontal acceleration in SI units of a vehicle that changes its velocity from 32 m/s to 12 m/s in 2 s?

• -10
• 10
• -20
• 20
• 44

Tags

NGSS.HS-PS2-1

What is the net force in SI units on a 1 kg bucket of Halloween candy that is lifted with a vertical force of 9.8 N? You need to be able to do lifting problems.

• 0 N
• 9.8 N
• 19.6 N
• -9.8 N

Tags

NGSS.HS-PS2-1

What is proper name for the force exerted on an object by the surface it rests on perpendicular to the surface?

• normal force
• friction force
• gravity
• surface force

What is the acceleration of a 2.0 kg kitty being accelerated up with a net force of 3 N? You have net force and mass. You use Fnet = ma. Solve for a.

• 3/2
• 2/3
• 6
• 3
• 2

Tags

NGSS.HS-PS2-1