Physics 9 - Practice MCQs

Weight is an example of which physical quantity?

• Acceleration

• Force

• Mass

• Pressure

Which instrument is best for measuring mass?

• Barometer

• Spring balance

• Beam balance

• Ammeter

A student weighs 400 N on Earth. What will be her approximate weight on the Moon (g = 1.6 N/kg)?

• 65 N

• 160 N

• 400 N

• 640 N

A 10 kg object experiences a gravitational field strength of 5 N/kg. What is its weight?

• 5 N

• 15 N

• 50 N

• 500 N

A ball falls through the air. Air resistance increases as speed increases. Which statement is correct?

• Acceleration increases

• Acceleration decreases

• Air resistance decreases

• Weight decreases

A 20 N force acts on a 5 kg object. What is the acceleration?

• 1 m/s²

• 2 m/s²

• 4 m/s²

• 5 m/s²

An aircraft has four forces: lift = 120 kN, weight = 120 kN, thrust = 40 kN, drag = 60 kN. What is the resultant force direction?

• A

• B

• C

• D

A car of mass 1000 kg accelerates at 2 m/s². What is the resultant force on it?

• 200 N

• 2000 N

• 20,000 N

• 200,000 N

During a tug of war, team A pulls with 1200 N left and team B pulls with 1000 N right. What is the net force?

• 100 N right

• 200 N left

• 2200 N left

• 2200 N right

Which equation defines momentum?

• p = F × t

• p = m × v

• p = m × g

• p = F × d