FORCE AND MOTION

In which of the following LAW of INERTIA is NOT being demonstrated??

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Which of the following states the THIRD LAW OF MOTION of ISAAC NEWTON?

• In every action there is an equal opposite reaction

• an object at rest will remain at rest unless there is an EXTERNAL FORCE applied onto it

• an applied force will be able to move an object

• Force applied is equal to mass and change of velocity

Which of the following states about the LAW OF ACCELERATION?

• In every action there is an equal opposite reaction

• an object at rest will remain at rest unless there is an EXTERNAL FORCE applied onto it

• an applied force will be able to move an object

• Force is proportional to the mass of the object and change in velocity

Which of the following statement is FALSE?

• In every action there is an equal opposite reaction

• an object at rest will remain at rest unless there is an EXTERNAL FORCE applied onto it

• The greater the force applied, the faster the object will move to certain direction

• The heavier the object is, the greater must be the acceleration

The scientist behind the LAWS OF MOTION.

Martha used to ride her bicycle every morning as form of exercise. If Martha is 45 kg, and she used to finish her track in 30m/s², how much is the force exerted by Martha?

• 1350 N
• 450 N
• 900 N
• 1800 N

Car A has a mass of 165,000 kg collided with Car B that is 150,000 kg that results to a huge damage. It is reported that the FORCE exerted by Car A is 3500 N. What is the acceleration of Car A?

• 210 m/s²

• 0.21 m/s²

• 0.021 m/s²

• 21 m/s²

A racecar, moving at a constant tangential speed of 60 m/s, takes one lap around a circular track with 250 m diameter. Determine the magnitude of the acceleration of the car.

• 14.4 m/s²

• 150 m/s²

• 15,000 m/s²

• 0.24m/s²

A 250 kg motorcycle is driven around a vertical circular track with a radius of 12 meters at a constant speed of 11 m/s. What is the CENTRIPETAL FORCE OF THE MOTORCYCLE?

• 2520.83 N

• 252 N

• 2750 N

• 33,000 N