p2-i

A measuring cylinder contains 30 cm3 of a liquid.

Some more of the liquid is added until the liquid level reaches the 50 cm mark. The reading on the balance increases by 30 g. What is the density of the liquid?

• 0.60 g/ cm3

• 0.67 g/ cm3

• 1.5 g/ cm3

• 1.7 g/ cm3

A stone of mass 94 g is lowered into the water so that it is fully submerged

A measuring cylinder contains 40 cm3 of water,

so that it is fully submerged as shown. What is the density of the stone?

• 1.1 g/ cm3

• 1.2 g/ cm3

• 2.1 g/ cm3

• 2.6 g/ cm3

A metal has a density of 8.0 g/ cm3 .

A solid cube of mass 1.0kg is made from this metal.

How long is each side of the cube?

• 0.50 cm

• 2.0 cm

• 5.0 cm

• 42 cm

Water has a density of 1000 kg / m3 .

A rectangular swimming pool has an average depth of 1.6m.

The length of the pool is 25m. The width of the pool is 10m. What is the mass of the water in the swimming pool?

• 2.5 kg

• 400 kg

• 400 000 kg

• 800 000 kg

The diagram shows two forces acting at right angles to each other.

What is the resultant of the two forces?

• 1.0N

• 5.0N

• 7.0N

• 12.0N

Below are four statements about acceleration.

Which statement is not correct?

• Acceleration always involves changing speed.

• Changing direction always involves acceleration.

• Changing speed always involves acceleration.

• Circular motion always involves acceleration.

The engine of a car produces a driving force of 5000 N on the car. Resistive forces R also act on the car, The car has a mass of 800 kg and an acceleration of 1.0 ms -2 . What is the value of R?

• 800N

• 4200N

• 5800N

• 8000N

A car travels forwards along a straight horizontal road. Only the horizontal forces acting on it are shown. The length of each arrow represents the size of each force. How do these forces affect the motion of the car?

• The car moves at constant speed.

• The car moves backwards.

• The car slows down.

• The car’s forward speed increases

An object decelerates from 25.0m/s to 5.0m/s in 4.0 s.

It has a mass of 50kg. What is the resultant force on the object?

• 0.63N

• 10.0N

• 250.0N

• 4000.0N

A player hits A 57 g tennis ball with a racket, ball hits the racket with 25m/s velocity and leaves with 15 m/s in the opposite direction

The average force exerted by the tennis racket on the ball is 35N. For how long is the tennis ball in contact with the tennis racket?

• 0.015s

• 0. 016s

• 0.065s

• 0.65 s