Review Examination in Science 7 Q3

Which is true about displacement?

• It is represented by a curvy line.

• It is the length of the entire path.

• It is always larger than distance.

• It is the shortest distance between the point of origin and the point of destination.

How will you define distance?

• It is the length of the entire path.

• It is always larger in magnitude.

• It is represented by a curvy line.

• It is the shortest distance between the point of origin and the point of destination.

Which is correct about acceleration?

• It is distance / time.

• It occurs when the object is at rest.

• It is the change in speed per unit time.

• It occurs when the object is in constant motion.

Acceleration is the change in velocity/speed per unit time; therefore, the object at rest is accelerating.

• True

• Undetermined

• False

• Acceleration increases in the situation.

Which situation shows acceleration?

• a dog at rest

• a hanging bridge

• a car moving with the same speed

• a truck that turns left in the corner

Which is correct about speed?

• It has direction.

• It is distance divided by time.

• It is the shorter path.

• It is the length of the entire path.

How will you differentiate scalar from vector quantity?

• Scalar and vector quantity has both magnitude and direction.

• Scalar quantity has direction, while vector quantity has magnitude.

• Scalar quantity has no direction, while vector quantity has both magnitude and direction.

• Scalar quantity has both magnitude and direction, while vector quantity has magnitude only.

Calculate the average speed (in km/h) of a car stuck in traffic that drives 12 kilometers in 2 hours.

• 6km/hr

• 6s

• 6m

• 6km/hr2

What is the displacement of the man in going to the factory?

• 0 m

• 120 m

• 200 m

• 320 m

What is the distance travel by the man in going to the factory?

• 0 m

• 120 m

• 200 m

• 320 m