Motion

Vector quantities are quantities that have

• magnitude only

• direction only

• magnitude and direction

• no magnitude no direction

Scalar quantities are quantities that have

• magnitude only

• direction only

• magnitude and direction

• no magnitude no direction

Which of the following is a vector quantity?

• area

• mass

• temperature

• weight

Which of the following is a scalar quantity?

• displacement

• force

• time

• velocity

Which of the following statements is correct?

• Acceleration is a scalar quantity.

• Displacement is a scalar quantity.

• Momentum is a vector quantity.

• Torque is a scalar quantity.

A girl walks from X to Y and to Z and then back to Y. The length of XZ is 50 m and Y is the midpoint of XZ. What is the total distance that she walked?

• 0 m

• 25 m

• 50 m

• 75 m

A dog walks the path W-X-Y-Z-X in 1740 seconds. what is the magnitude of the average velocity of the dog?

• 0.23 m/s

• 0.35 m/s

• 1.01 m/s

• 1.45 m/s

A car traveled north for 60 km before heading back south for 40 km. If the whole journey took 2 hours, which of the following pairs is correct?

• Average speed= 30 km/h

• Average velocity= 50 km/h

• Average speed= 10 km/h

• Average velocity= 10 km/h

___________________ is the rate of change of distance.

• Speed

• Velocity

• Motion

• Displacement

Which event specify magnitude and direction?

• The bottle can hold 500 ml of water.

• Town A is located 40 km north-west of Town B.

• Jen heats 250 ml of water from 20°C to 100°C.

• The airplane is flying at 800 km/h.