A level physics - 10.2 Spaced practice

Which quantity is represented by the area under a force–time graph?

• Average power

• Elastic strain energy

• Momentum change

• Work done

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physics

a level

work done

A pellet with velocity 200 m s⁻¹ and mass 5.0 g is fired vertically upwards into a stationary block of mass 95.0 g. The pellet remains in the block. The impact causes the block to move vertically upwards.

What is the maximum vertical displacement of the block?

• 5.1m

• 10m

• 51m

• 100m

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physics

a level

momentum

Which row is true for an elastic collision between two objects in an isolated system?

• A

• B

• C

• D

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physics

a level

momentum

A body of constant mass falls freely due to gravity.

The rate of change of momentum of the body is equal to its

• kinetic energy

• mass

• gravitational potential energy

• weight

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physics

a level

momentum

force

A 0.20 kg mass is suspended from a spring. A 0.10 kg mass is suspended from the 0.20 kg mass using a thread of negligible mass.

The system is in equilibrium and the thread is then cut.

What is the upward acceleration of the 0.20 kg mass at the instant that the thread is cut?

• 3.3 m s^–2

• 4.9 m s^–2

• 6.5 m s^–2

• 9.8 m s^–2

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physics

a level

forces

Three identical cells, each of emf 1.5 V and internal resistance 6.0 Ω, are connected to resistor R. The resistance of R is 6.0 Ω.

What is the current in R?

• 0.19A

• 0.25A

• 0.56A

• 0.75A

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physics

a level

circuits

Small water drops leave a tap with zero velocity at intervals of 0.20 s.

They then fall freely 0.80 m to reach a horizontal surface.

How far has a drop fallen when the previous drop hits the surface?

• 0.16m

• 0.20m

• 0.40m

• 0.60m

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physics

a level

kinematics