1.1 motion

What is motion?

• A change in position.

• A change in force.

Which one is moving in positive direction?

• Man

• Bike

• Bus

• Car

Branch of physics which studies motion of bodies

• Mechanics

• Kinematics

• Statics

• Dinamics

Speed of bus relative to the motorbike?

• 110km\h

• 10km\h

• -10km\h

• -110km\h

Which picture shows a "point mass"?

• 
• 
• 
• 

If a Car A is travelling at 60km/h and Car B is travelling at 80km/h what is the relative speed?

• Car B is 10 kmh faster

• Car A is 10 mph faster

• Car B is 20 kmh faster

• Car B is 20 mph faster

What is a velocity of car relative to the bus?

• 30km\h

• 250km\h

• -30km\h

• -250km\h

Through the window, a woman inside a moving train is looking at you, who is standing still. Relative to the ground, are you moving or at rest?

• Moving

• At rest

Any object that changes in ---------------is in motion.

• Direction

• Position

What is a velocity of motorbike relative to the bus?

• 0

• 110km\h

• -110km\h

• -0