Physics Quiz

What is the equation that links gravitational field strength, mass and weight?

• weight = mass x gravitational field strength

• weight = mass ÷ gravitational field strength

• weight = gravitational field strength ÷ mass

Answer explanation

The correct equation that links gravitational field strength, mass, and weight is weight = mass x gravitational field strength.

What is the equation that links distance, force, and work done?

• work done = force x distance

• work done = force ÷ distance

• work done = distance ÷ force

Answer explanation

The correct equation that links distance, force, and work done is work done = force x distance.

What is the equation that links extension, force applied to a spring, and spring constant?

• force applied to a spring = spring constant x extension

• force applied to a spring = spring constant ÷ extension

• force applied to a spring = extension ÷ spring constant

Answer explanation

The correct equation is force applied to a spring = spring constant x extension.

What is the equation that links distance, time, and velocity?

• velocity = time x distance

• velocity = distance ÷ time

• velocity = time ÷ distance

Answer explanation

The correct equation that links distance, time, and velocity is velocity = distance ÷ time.

What is the equation that links acceleration, change in velocity, and time?

• acceleration = change in velocity x time

• acceleration = change in velocity ÷ time

• acceleration = time ÷ change in velocity

Answer explanation

The correct equation that links acceleration, change in velocity, and time is acceleration = change in velocity ÷ time.

What is the equation that links acceleration, mass, and resultant force?

• resultant force = mass x acceleration

• resultant force = mass ÷ acceleration

• resultant force = acceleration ÷ mass

Answer explanation

The correct equation that links acceleration, mass, and resultant force is resultant force = mass x acceleration.

What is the equation that links mass, momentum, and velocity?

• momentum = mass x velocity

• momentum = mass ÷ velocity

• momentum = velocity ÷ mass

Answer explanation

The correct equation that links mass, momentum, and velocity is momentum = mass x velocity.

What is the momentum of a toy car of mass 500 g, travelling at a velocity of 30 m/s?

• 0.15 kgm/s

• 15 kgm/s

• 15 000 kgm/s

• 15 000 000 kgm/s

Answer explanation

The momentum of an object is calculated by multiplying its mass by its velocity. In this case, the momentum is 500 g (0.5 kg) * 30 m/s = 15 kgm/s. Therefore, the correct answer is 15 kgm/s.

What is the unit of work?

• Newton

• Joule

• Watt

• meter

Answer explanation

The unit of work is Joule. Work is measured in Joules, which represents the amount of energy transferred when a force acts on an object over a distance.

What is the resultant force in this diagram?

• 17 N, right

• 17 N, left

• 23 N, right

• 12 N, up

Answer explanation

The resultant force is 17 N to the right because the sum of the forces in that direction is 17 N, which is the correct choice.