Newton's Laws

The force that one surface exerts on another when the two surfaces rub against each other

• Speed 
• Force
• Net force
• Friction

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• accelerate.

The SI units for force are...

• Kilograms
• Newtons
• Meters per second
• Pounds

An object at rest will _______ if no outside forces are applied.

• Stay at rest
• Increase Velocity
• Decrease Mass

Tags

NGSS.HS-PS2-1

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)

• The one with a mass of .78 kg will have the greatest acceleration.
• The one with a mass of .52 kg will have the greatest acceleration.
• They will both accelerate at the same rate.

Tags

NGSS.HS-PS2-1

If you exert a net force of 8 N on a 2-kg object, what will its acceleration be?

• 2 m/s²
• 4 m/s²
• 16 m/s²
• 10 m/s²

Tags

NGSS.HS-PS2-1

If two forces of the same magnitude are acting on an object in the same direction, the resultant force will become zero. True or false?

• true
• false

What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

Keep in mind F=ma
If you are pushing a 1000 kg car and it accelerates at 0.5 m/s^2, what is the resultant force on the car?

• 2000 N
• 60N
• 500 N
• 12 N

A bicycle rider travels 100 kilometres in 4 hours.  What is the cyclist's average speed?

• 400 km/h
• 25 km/h
• 104 km/h
• 0.025 km/h