Semester 1 Review -- Physics

Which of the following are vectors?

• Speed

• Velocity

• Energy

• Force

What is the SI unit for distance?

A 5 kg ball is traveling at 20 m/s. What is its kinetic energy?

• 1000 J

• 500 J

• 2000 J

• Not enough information

Which of the following is zero at a ball's peak?

• Total velocity

• Horizontal velocity

• vertical velocity

• acceleration

Which would you have to apply more force to, to stop if its moving at about 30 miles an hour (think friction!) 

• a Tank
• A fully loaded Semi Truck
• Siscoe's Ego
• A Smart Car

What is Newton's First Law?

• For every action, there is an equal and opposite reaction
• Force is equal to mass times acceleration (F=MA)
• Objects in motion stay in motion when acted upon by an outside force and vice versa for an object at rest

What are the units for Force?

• W

• N

• m/s

• m/s²

Which of the following is Newton's 2nd law?

• For every action, there is an equal and opposite reaction.

• The acceleration of an object is produced by a net force and is inversely proportional to the mass of the object.

• An object will remain at rest or in motion unless an outside force acts upon it.

• A force is a push or pulll

What is the acceleration of a car moving at a constant velocity of 30 m/s?

• 0 m/s²

• 30 m/s²

• 90 m/s²

• 120 m/s²

If a car goes from 30 m/s to 50 m/s in 2 seconds, what is its acceleration?

• 40 m/s²

• 20 m/s²

• 10 m/s²

• 0 m/s²