2019 6091 Physics Paper 1

Which quantity does not have unit?

• refractive index

• resistance

• volume

• wavelength

The labelled arrows in the diagram represent the directions and sizes of the forces acting on a stationary point mass.

In which direction does the point mass accelerate?

• A

• B

• C

• D

• A

• B

• C

• D

Which reading is shown?

• 5.64 mm

• 7.14 mm

• 7.16 mm

• 7.64 mm

What is the acceleration of the car at 30 s?

• 0

• 25/50

  m/s^2

• (25-5) / 30

  m/s^2

• 25/30

  m/s^2

A heavy object is dropped from the aeroplane. The velocity of the object is measured at two points before it hits the ground. The velocities are found to be same.

What is the explanation for this?

• All objects fall at constant velocity.

• The force ont he object due to air resistance is equal to the acceleration of free fall g.

• The force on the object due to air resistance is equal to the object's weight.

• The force on the object due to air resistance is larger than the object's weight.

What is the order of magnitude for the diameter of the Earth and for the diamter of an atom?

• A

• B

• C

• D

A car has a mass of 800 kg. The car's engine exerts a driving force of 2500 N on it. This causes the car to accelerate at 2.0 m/s.

What is the total resistve force acting on the car?

• 900 N

• 1600 N

• 2100 N

• 4100 N

Which statement concerning the mass of a body is not correct?

• The body experiences a force in a gravitational field because of its mass.

• The mass is a measure of the amount of matter in the body.

• The mass changes when the strength of a gravitational field changes.

• The mass resists a change in the state of rest or motion of the body.

What is the minimum pressure it can exert on the ground?

• 0.40 Pa

• 400 Pa

• 4000 Pa

• 40 000 Pa