Gravitation Quiz

What is the force which pulls the objects towards the centre of the earth known as?

• Electromagnetic force

• Tension force

• Gravitational force

• Frictional force

Who proposed the law about the force of attraction between two objects in the universe?

• Isaac Newton

• Albert Einstein

• Nikola Tesla

• Galileo Galilei

What is the value of the gravitational constant (G) in Nm^2/kg^2?

• 1.65 x 10^-24

• 6.67 x 10^-11

• 9.8

• 6.37 x 10^6

What is the SI unit of pressure?

• Watt

• Joule

• Newton

• Pascal

What is the upward force experienced by an object when it is immersed into a fluid called?

• Frictional force

• Buoyancy

• Tension force

• Electromagnetic force

What is the ratio of the density of a substance to that of the density of water called?

• Relative density

• Universal density

• Absolute density

• Specific density

Why does a sheet of paper fall slower than one that is crumpled into a ball?

• Due to higher air resistance

• Due to higher mass

• Due to lower air resistance

• Due to lower surface area

What is the weight in newton’s of a 10 kg object on the moon?

• 98N

• 16.33N

• 9.8N

• 6.67 x 10^-11N

A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground.

• 19.6 m/s

• 39.2 m/s

• 9.8 m/s

• 0 m/s

What is the force with which an object is attracted towards the centre of the earth called?

• Thrust

• Weight

• Buoyancy

• Pressure