Pitanje 18
18.
1.State the equation which links force, mass, and acceleration.
1.State the relationship between the mass of an object and its acceleration at a constant force.
1.Define resultant force.
State the independent, dependent, and one reasonable control variable in an experiment to investigate how the height a ball is dropped from affects its final velocity.
1.Calculate the weight of an object on Earth that has a mass of 30kg.
Explain with a diagram why an object moving in a circle at a constant speed is accelerating.
Explain what happens when a net force acts on an object that is able to move
State whatis meant by mDv
State the equation which links force and rate of change in momentum.
State common safety features which protect from collisions.
Explain how common safety feature protect people during collisions.
Explain what happens when a net force acts on an object that is able to move
State whatis meant by mDv
State the equation which links force and rate of change in momentum.
State common safety features which protect from collisions.
Explain how common safety feature protect people during collisions.
write down the missing words for a, b and c
1.An unbalanced force on an object which can move will always result in a change in momentum.
An object which is increasing in velocity is increasing in momentum.
Increasing the amount of time over which a change in momentum occurs decreases the force on an object.
The unit for force is kg m/s.
The unit for velocity is m/s.