AS Physics Vectors and Scalars

Which of the following is a scalar quantity?

• velocity

• kinetic energy

• force

• momentum

Coplanar forces of 5 N, 4 N and 3 N act on an object. Which force, in N, could not possibly be the resultant of these forces?

• 0

• 4

• 12

• 16

What is the resultant displacement when P and Q are added?

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• 
• 
• 

Which is a scalar quantity?

• momentum

• weight

• power

• moment

An aircraft is flying due north through still air with a speed v

The aircraft enters a region where the wind is blowing with a speed u from a direction which makes an angle of θ with due south.

What is the time taken for the aircraft to fly a distance D due north of its current position in this windy region?

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• 
• 
• 

Which row correctly states whether momentum, mass and velocity are scalar or vector quantities?

• A

• B

• C

• D

A girl kicks a football vertically upwards at time t = 0

Air resistance is negligible.

What is the variation of the vertical component of velocity v of the football with t until it reaches the ground?

Which is a pair of vectors?

• weight and work

• force and energy

• displacement and momentum

• acceleration and power

A heavy uniform trapdoor is hinged to the floor. It is held open by a rope as shown.

Which arrow shows the direction of the reaction force of the hinge on the trapdoor?

• A

• B

• C

• D

An aeroplane flies horizontally at 150 m s⁻¹ along a bearing 60° east of north.

How far north from its starting position is the aeroplane after one hour?

• 270 km

• 470 km

• 510 km

• 540 km