Basis PF pre-comp_comp review

what is velocity

• rate of change of an objects posgtion

• rate of change of an objects position

• rate of change of an objects velocity

• how fast an object travels with direction

what are directly propiotinal?

• FORCE AND ACCLERATION

• MASS AND RORCE

• FORCE AND WORK

• TIME AND POWER

Force = 99370N

Accleration=4/s^2

Velocity=4m/s east

Mass=8kg

What is Kenetic energy

• too much work to do

• 981watts

• 18 J

• 64 J

a mechine does 900 watts of power in 2 secconds, WHAT IS WORK

• 450J

• 1800J

• 900J

• 36J

What is motion

9364 KG= how many Mega Grams?

• 9,364,000 Mg

• 93,640 Mg

• mission: Imposible

• 100 MG

what is the differece between objective and subjective statement?

• Objective statements are based on emotions and feelings, while subjective statements are based on facts and evidence.
• Objective statements are always biased, while subjective statements are always unbiased.
• Objective statements are always based on personal opinions, while subjective statements are always based on facts.
• Objective statements are based on facts and evidence, while subjective statements are based on personal opinions and feelings.

what does an inclined plane do ?

• It reduces the amount of force needed to lift an object.
• It increases the amount of force needed to lift an object.
• It has no effect on the amount of force needed to lift an object.
• It changes the weight of the object.

a horse[bull] pulls on a person with 9000 newtons. If the mass of the person is 100,000 grams, how much force does the man pull on the bull ?

• 1000 newtons
• 5000 newtons
• 9000 newtons
• 7000 newtons

mass=0kg

height= 9meters

accleraration=9m/s^2

what is Potiential energy

• 100 J
• 0 J
• 45 J
• 81 J