Friction
Gravity
Pressure
Newton's Laws
Force
100
True or False. A bike on grass is a form of friction?
What is true?
100
True or False: Does gravity hold us on the earth?
What is True
100

Pressure is stated in the SI unit 

Pascal

100

Does an object moving at constant speed in a straight line need a force to act on it to keep it in uniform motion? Explain using Newton's law.

What is 'no"? According to Newton's 1st law, a force will cause a moving object to either change its motion or direction.

100

True or False: An unbalanced force doesn't affect motion.

What is False

200

Which are 2 form of decreasing friction intentionally? 

What is use of lubricants, ball bearings in moving parts of machinery, cushion of air.

200
What is the measurement of the force of gravity on an object? A. Leather Belt B. Weight C. Friction D. Acceleration
What is weight
200

Pressure is defined as 

The perpendicular force acting on unit area
200
A rocket taking off is an example of which of Newton's laws? A.1st B.2nd C.3rd D.88th
What is 3rd
200

What is the definition for inertia? 

What is The tendency of a body to resist a change in it's state of motion.

300

What is the definition of friction? 

What is the contact force which resists motion.

300

What is the definition of gravitational force. Is it a contact or non-contact force?

Gravitational force is the force of attraction (pull) between two masses. It is a non- contact force.

300

As the surface area increases, the pressure exerted 

A. increases 

B. decreases

C. remains the same 

B

300
Which of Newton's laws states: That an object at rest will stay at rest and an object in motion will stay in motion at a constant velocity, unless acted upon by an unbalanced force. A.1st B.2nd C.3rd D.D.U.I.
What is 1st
300

A book of weight 12 N is resting on table. The force that the book exerts on the book is 

12 N

400

What are 2 ways in which friction can be a nuisance? Give an example of each.

What is 

-produces  heat e. g. machines get hot

-wear and tear e.g. tires get worn down

-slows down motion unnecessarily e.g. a ship in water, airplane 

400

What is the weight exerted by a 500 g box?

W= mg 

W= 0.5 x 10

   =5 N

400

A 4000  N rectangular block has dimensions 5 m X 1 m x 8 m. Calculate the least pressure that can be exerted?

What is 100 Pa

400
Which of Newton's Laws states: That for every action there is an equal and oppostite reaction. A.1st B.3rd C.2nd D.The law of Harrison Ford
What is 3rd
400

Identify the following types of forces:

a. The force which changes the direction of a compass needle.

b. The force which keeps a swimmer afloat.

c. The force which pulls a persons a person's arms together when she is stretching a chest expander.

What is 

a. Magnetic

b. Upthrust

c. Tension

500
Which one of these two are true? A.Friction takes place when you go down a slide. B.Friction takes place when you try to go down a street block on a metal sled.
What is B.
500

This instrument measures weight. What is the SI unit?

What is a Spring balance.

What is the Newton

500

The hydraulic machine is based on this principle 

Pressure is the same at all points at equal depth in a liquid

500

Is a larger force required to stop a car moving at 50 km/h or 100 km/h? Explain your answer.

What is 100 km/h. Momemtum is mass x velocity, According to Newton's 2nd law, force is directly proprtional to the rate of change of momentum, the larger the momentum, the larger the force required to stop it.

500

What is Hooke's law? What type of graph will you get if you plot the extension of a spring against its load within its elastic limit?

The extension of a spring is directly proportional to the applied force provided that the elastic limit is not exceeded.

What is a straight line graph through the origin?

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