Physics HBEL 8

Find the weight of a 41kg boy on the surface of planet whose gravitational attraction is 2/10 time the Earth's pull.

• 68N

• 90N

• 80.4N

• 41.6N

__________ is the force that direct objects towards the centre of the earth.

• friction

• upthrust

• gravity

• drag

The value G= 6.673 ×10-11 Nm2 represents __________.

• vector

• force

• gravitational constant

• acceleration due to gravity

Which law of physics states that force equals the product of mass and acceleration.

• Newton's 1st Law

• Newton's 2nd law

• Ohms law

• Hooke's law

Calculate the accelereration due to gravity for an object at the surface of the moon. Given that the radius of the moon is 1.74 ×106m and the mass of the moon is 7.35 ×1022kg.

• 1.620ms-2

• 2ms-2

• 2.3ms-2

• 1.80ms-2

________________ is the amount of stuff or matter that make up a substance.

• molecule

• weight

• matter

• mass

Which of the following is product of mass and gravity?

• pressure

• weight

• force

• mass

The first use of a telescope in astronomy was by _____________________.

• Hans Lippershay

• Niel Armstrong

• Galileo Galilei

• Isac Newton

The unit of weight is _______________.

• Kilogram

• Joule

• Newton

• Erg

Calculate the weight a 41.9 kg bag on Earth surface.

• 68N

• 500N

• 79N

• 410.62N