Kinematics and Trajectories Exam

Which is a scalar quantity?

• Displacement

• Speed

• Velocity

• Acceleration

What is the total displacement of a person who walks 5 m north, then 5 m south?

• 0 m

• 5 m

• 10 m

• -10 m

Displacement differs from distance because:

• It uses time

• It includes direction

• It ignores motion

• It is always greater

A scalar quantity:

• Has direction and magnitude

• Can be negative

• Has magnitude only

• Is always constant

A student walks 3 m east and 4 m north. What is their displacement?

• 7 m

• 5 m

• 1 m

• 3.5 m

Speed is calculated using:

• Force ÷ Mass

• Distance ÷ Time

• Mass × Acceleration

• Displacement × Time

Tags

NGSS.MS-PS3-1

Velocity differs from speed because:

• A) It's scalar

• B) It includes direction

• C) It's faster

• D) It uses area

A train moves 300 km in 4 hours. What is its speed?

• 75 km/h

• 100 km/h

• 120 km/h

• 60 km/h

Acceleration occurs when:

• Speed stays the same

• Direction changes

• Mass changes

• Friction is zero

Tags

NGSS.HS-PS2-1

A car accelerates from 0 to 20 m/s in 4 s. What is the acceleration?

• 4 m/s²

• 5 m/s²

• 6 m/s²

• 8 m/s²

Tags

NGSS.HS-PS2-1