3G2 Science Physics Formula Review (Ch2, 3, 4)

Front

Equation to calculate net force on a moving object.

Back

P = F/A

Answer explanation

Force is defined as mass × acceleration, F = ma.

Front

A truck of mass 2000 kg accelerates at 2.5 m/s². What is the net force acting on it?

Back

20000 N

Answer explanation

Using F = ma: F = 2000 × 2.5 = 5000 N.

Front

Which equation calculates the acceleration of an object? Options: F = ma, a = (v - u)/t, W = mg, ρ = m/V, P = F/A

Back

a = (v - u)/t

Answer explanation

Acceleration is the change in velocity divided by time, a = (v - u)/t.

Front

A cyclist speeds up from 5 m/s to 15 m/s in 4 seconds. What is her acceleration?

Back

2.5 m/s²

Answer explanation

a = (15 - 5) / 4 = 2.5 m/s².

Front

Which formula calculates the weight of an object on Earth?

Back

W = mg

Answer explanation

Weight is the gravitational force on an object, W = mg.

Front

An object has a mass of 3.0 kg. What is its weight on Earth? (Take g = 10 m/s²)

Back

30 N

Answer explanation

W = 3.0 kg × 10 m/s² = 30 N.

Front

Which formula calculates density?

Back

ρ = m/V

Answer explanation

Density is mass divided by volume, ρ = m/V.

Front

A block has a mass of 200 g and a volume of 100 cm³. What is its density?

Back

2.0 g/cm³

Answer explanation

ρ = 200 g / 100 cm³ = 2.0 g/cm³.

Front

Which formula calculates pressure?

Back

P = F/A

Answer explanation

Pressure is force divided by area, P = F/A.

Front

A woman applies a force of 600 N on the floor with a heel area of 0.002 m². What is the pressure?

Back

300000 Pa

Answer explanation

P = 600 N / 0.002 m² = 300000 Pa.